Academic literature on the topic 'Vocal duets with 2 pianos'

This article characterizes development trends in jazz piano from its origins in the “third-layer” (Konen, V., 1984) of music (ragtime and other “pre-jazz” forms) to the present time (avant-garde and retro styles of the late 20th – early 21st centuries). Main attention was devoted to the stylistic sphere, which represents an entirety of techniques and methods of jazz piano improvisation and combines genre and style parameters. In this context, the currently available information about jazz pianism and its sources (Kinus,Y., 2008; Stoliar, R., 2017) was reviewed, and sociocultural determinants, which contributed to the advent and changes of jazz piano styles were highlighted. Standing out among them at the first (traditional) stage are the schools and individual creative techniques known under generic name “stride piano” and based on the ragtime technique. At the second (contemporary) stage beginning from bebop, jazz piano stylistics gradually diverge from standardized textural formulas of homophonicharmonic type and attain fundamental diversity depending on creative attitudes of leading jazz pianists. The question of jazz piano stylistics is one of the least studied in jazz theory. The existing works devoted to this subject address mostly the sequence of the advent and changes of jazz piano styles along with the general characteristics of their representatives. Beginning from approximately the 1920s, jazz piano styles appeared and changed so fast that they left no time for their comprehension and perception (Kinus, Y., 2008). Only in the newest stylistics of the period after bebop, which divided the art of jazz into traditional and contemporary stages, did these styles attain a certain shape in new modifications and become the components of a phenomenon defined by the generic notion “jazz pianism”. It was stated that the genesis of this phenomenon is usually seen in the art of ragtime, carried in the United States of the late 19th – early 20th centuries by itinerant pianists. This variety of “third-layer” piano music playing produced a significant impact on the art of jazz in general, which is proved by its reproduction in the Dixieland and New Orleans styles as some of the first examples of jazz improvisation. The stylistics of ragtime influenced the entire first stage of jazz piano, which traces its origins back to approximately the 1910s. It combined mental features and esthetics of two traditions: European and Afro-American, which in the entirety produced the following picture: 1) popular and concert area of music playing; 2) gravitation toward demonstration of virtuosic play; 3) domination of comic esthetics; 4) objectivity of expression; 5) tendency toward the completeness of form; 6) inclination toward stage representation. In technological (texturalpianistic) aspect, ragtime, reproduced in the jazz stylistics of stride piano, demonstrated the tendency toward universalization of piano, which combined in the person of one performer the functions of solo and accompaniment, derived from the practice of minstrel banjoists related to the percussion-accented rhythmics of dance accompaniment (Konen, V., 1984). It was stated that ragtime as the transitional bridge to jazz piano existed simultaneously with other forms of “third-layer” music playing found in the Afro-American environment (unlike ragtime itself, which was an art of white musicians). These were semi-folklore styles known as “barrel house” and “honky-tonk(y) piano” cultivated in Wild West saloons. The subsequent development of jazz piano stylistic went along the lines of more vocal and specific directions related mostly to peculiarities of playing technique. Among the more global origins equal in significance to ragtime and stride pianists derivative, blues piano stylistics is worth noting. It represents an instrumental adaptation of vocal blues, which had the decisive influence over the melodics and rhythmics of the right hand party of jazz pianists (ragtime and stride piano highlighted and consolidated the typical texture of accompaniment, i.e., the left hand party). Blues piano style is a multicomponent phenomenon that shaped up as a result of efforts taken by a whole number of jazz pianists. It was developed, and continues to exist until presently, in two variants: a) as a solo piano variant, b) as a duet variant (piano and vocal). Along with blues piano, a style known as “boogie-woogie” was cultivated in jazz piano stylistics of the period before bebop as the new reminiscence of the pre-jazz era (with rock-n-roll becoming a consequence of its actualization in the 1950–1960s). A stylistic genre known as “Harlem piano style” (its prominent representatives include Luckey Roberts, James P. Johnson, Willie “the Lion” Smith, and Thomas “Fats” Waller) became a sort of compendium that combined genetic components of traditional jazz piano. This school has finally defined jazz piano as a form of solo concert music playing, which also determined the subsequent stylistic varieties of this art, the most noteworthy of which are “trumpet piano style”, “swing piano style” and “locked hands style”. Their general feature was interpretation of the instrument as a “small orchestra”, which meant rebirth at the new volute of a historical-stylistic spiral of the “image” of universal piano capable of reproducing the “sounds” of other instruments, voices and their ensembles. Outstanding pianists of various generations have been, and are, the carriers (and often “inventors”) of jazz piano styles. It should suffice to mention the names of such “legends” of jazz as Art Tatum, Oscar Peterson, Thelonious Monk, Bud Powell, Bill Evans, and also Herbie Hancock, Chick Corea, Keith Jarrett (older generation), Gonzalo Rubalcaba, Brad Mehldau, Vadim Neselovskyi, Robert Glasper (middle generation), Eldar Djangirov, Tigran Hamasyan, Cory Henry (younger generation). Conclusions. The description of the stages of development of jazz piano pianism made in this article proves that its polystylistic nature is preserved, and the main representative of certain stylistic inclinations were and remain the texture. Textured formulas serve as the main objects of stylistic interpretations for jazz pianists of different generations. These readings are represented by two vectors – retrospective (revival of jazz traditions) and exploratory, experimental (rapprochement with the academic avant-garde). Of great importance are the styles of personalities, in which polystylistic tendencies are combined with the individual playing manners and improvisation, which, in general, is the most characteristic feature of the current stage of development of jazz piano art.

AbstractSubdesert mesites produced five distinct types of vocal element which they combined to produce two broad classes of song 'syllable'. One of these syllables was exclusive to males and the other was mainly given by females. Song syllables were either produced in series by single individuals to give solo songs, or 2-5 five birds vocalised simultaneously with varying degrees of temporal precision to give duets and choruses. Pair-duets were the most common and male solos the least common form of song recorded. Females initiated and terminated significantly more songs than males and male syllables followed female syllables more promptly than the converse. However, the syllable structure of male and female solos changed when synchronised to form pair-duets indicating that, in contrast to most previous studies of duetting species, these songs are a function of both male and female behaviour. Only a subset of each group contributed to duets and choruses and participation was positively correlated with mass for males and females both within and across groups. Song activity remained at a low but relatively constant rate throughout both the day and season. The wide variety of contexts in which songs were produced indicated that they serve multiple functions: some appear to be cooperative endeavours (e.g. to maintain contact in dense vegetation and to defend territories), others may be underpinned by conflicts and could function in matedefence or in inter- and intra-sexual assessment within groups.

Long-range vocal communication in socially monogamous titi monkeys is mediated by the production of loud, advertising calls in the form of solos, duets, and choruses. We conducted a power spectral analysis of duets and choruses (simply “duets” hereafter) followed by linear discriminant analysis using three acoustic parameters—dominant frequency of the combined signal, duet sequence duration, and pant call rate—comparing the coordinated vocalizations recorded from 36 family groups at 18 sites in Bolivia, Peru and Ecuador. Our analysis identified four distinct duetting patterns: (1) a donacophilus pattern, sensu stricto, characteristic of P. donacophilus, P. pallescens, P. olallae, and P. modestus; (2) a moloch pattern comprising P. discolor, P. toppini, P. aureipalatii, and P. urubambensis; (3) a torquatus pattern exemplified by the duet of Cheracebus lucifer; and (4) the distinctive duet of P. oenanthe, a putative member of the donacophilus group, which is characterized by a mix of broadband and narrowband syllables, many of which are unique to this species. We also document a sex-related difference in the bellow-pant phrase combination among the three taxa sampled from the moloch lineage. Our data reveal a presumptive taxonomic incoherence illustrated by the distinctive loud calls of both P. urubambensis and P. oenanthe within the donacophilus lineage, sensu largo. The results are discussed in light of recent reassessments of the callicebine phylogeny, based on a suite of genetic studies, and the potential contribution of environmental influences, including habitat acoustics and social learning. A better knowledge of callicebine loud calls may also impact the conservation of critically endangered populations, such as the vocally distinctive Peruvian endemic, the San Martin titi, P. oenanthe.

Background. In 2018, the 170th anniversary of the death of Gaetano Donizetti (1797–1848) was commemorated. G. Donizetti created 74 operas of various genres and themes. He was the head of the Italian opera school in the second half of the 1830s, picking up the baton from G. Rossini and V. Bellini and anticipating G. Verdi’s searching. Having an apparent melodic gift, excellent skills of composing, knowledge of musical theatre, he created his works extremely quickly and easily – up to 3–4 operas per year, which caused repeated critical attacks. Opera works by G. Donizetti got a hard futurity. This music laid hold of audience in the 1830s–40s, but practically got out of the repertoire by the end of the 19th century, giving way to the masterpieces by G. Verdi and R. Wagner. Its revival began in the 50s of the 20th century, thanks to remarkable interpretations of great performers, in particular Maria Callas, Joan Alston Sutherland, Montserrat Caballé (since 1965), and others. A new success of opera masterpieces arose due to the fact that performing concepts restored the original author’s conception. Among the researchers and listeners, G. Donizetti’s operatic works eclipsed other spheres of his creativity, such as instrumental and chamber vocal music. But at the same time, G. Donizetti lived in the times of the widespread distribution of the romance, and the rapid growth of its popularity in the amateur and professional performing environment. He was an outstanding expert of vocal music and could not ignore this genre. Naturally there is a need for a more attentive approach to such a little-studied topic, as the composer’s chamber vocal music. Objectives. Gaetano Donizetti’s chamber-vocal creativity is the object of this study. The subject is the song cycle “Summer Nights in Posillipo” (“Nuits d’été à Pausilippe”) in terms of individual composer style. The objectives of offered article are not so much fi ll existing gaps on this issue, as taking a closer look at the romance genre, which is eclipsed by the composer’s opera compositions. The author of this work uses classical methods of analysis of historical and theoretical musicology. Results. Studies on the composer style of G. Donizetti in the Russian and Ukrainian languages are very limited in both quantitative and thematic terms. Most sources, including in other languages, consider opera works by the composer. The exact number of Donizetti’s romances is still unknown (from 250 to 270). The song cycle “Nuits d’été à Pausilippe” / “Summer Nights in Posillipo” (1836), consisting of 12 songs, is also not considered in the scientifi c literature. Typical for the fi rst third of the 19th century is the chronotope of this cycle, in which the poetics of the geographical toponym and the symbolism of the night are combined. Posillipo is a distinctive place in the northern part of the Gulf of Naples, with its unusually picturesque landscape and artifacts of ancient culture. The name of the song collection by G. Donizetti corresponds to the popular literature formula of the 1830s – “Florentine Nights” (1833) by H. Heine, “Egyptian Nights” (1835) by A. S. Pushkin, and others, in which the genre of the “night” novelistic cycle embodied. The musical implementations are “Night Pieces” op. 23 (1839) by R. Schumann, song cycle “Summer Nights” op. 7 (1841) by G. Berlioz, which were created in the period of composition writing (1836) by G. Donizetti. The novella-like character of “Summer Nights in Posillipo” is represented by incompleteness of lyric utterance, free alternation of fragments within the boundaries of a given topic, the variability of timbre solutions, varied choice of authors of poetic texts. Six solo numbers (Nos. 1–6) are supplemented by six duets for various timbre sets (Nos. 7–12, for 2 sopranos, soprano and mezzo-soprano, soprano and tenor, tenor and bass). The poems by four poets of Romanticism are involved: Leopoldo Tarantini (Nos. 1, 8, 10, 12), Carlo Guaita (No. 2), Michele Palazzolo (Nos. 7, 11), Francesco Puoti (No. 9), Victor Hugo (No. 6). Also the poems of the anonymous poet (No. 3) and the folklore text (No. 5) are used here. The cycle is “multilingual”, the Italian language coexists with the Neapolitan and French. The love theme prevails. We can talk about creation of a poetic-collective image entitled Homo amore. Solo songs (Nos. 1–6) form conditional self-contained cycle, which is distinguished by genre diversity. This is evidenced by both the designations of the composer himself (Barcarolle – No. 1, Romance – No. 2, Arietta – No. 3, Ballade – No. 4, Neapolitan song – No. 5), and signs of other genres (opera monologue – No. 1, Chivalric romance – No. 2, Serenade – No. 3, Alba – No. 6). The second little cycle is formed by the duets Nos. 7–12. The composer designates Nos. 7–11 as nocturne, while Nos. 12 as brindisi, or drinking song. G. Donizetti’s nocturnes are glad and lyrical, motile, virtuosic, theatrically spectacular. Life and earthly pleasures are glorifi ed in sounding. The atmosphere of a brilliant ball evening is felt here. The unifying factor in duets are the principles of the texture organization of vocal parts. The fi rst one is associated with the interaction of voices-parts with each other according to the principle of anti-phoning singing (Nos. 7, 9, 11). The second principle is associated with the simultaneous sounding of two voices (Nos. 8, 10, 12). The role of intonation relatedness at the songs is signifi cant. The thematism of twelve songs can be divided by the type of melodic core. As a result, there are three groups: I – themes Nos. 1, 2, 5, 8, 10; II – Nos. 3, 6; III – duets Nos. 7, 9. Conclusions. The applying of the “intonation vocabulary” of the epoch is refl ected in numerous allusions between the melodies of the romances by G. Donizetti and the works of his contemporaries (M. Glinka, F. Schubert) and successors (R. Hahn). The biggest interest is the composer work with the form. Acting within the framework of the repeatability (melodic and structural) and stanza form, G. Donizetti seeks to overcome this necessity in every possible way by various means. The structure of his romances “lives”, naturally unfolds in time, obeying the laws of vocal music. The results of “Summer Nights in Posillipo” analysis allow us to conclude about the originality of G. Donizetti’s creative decisions in the genre of romance.

The object of research is the works of V. Bibik written at the beginning of his mature period. The aim of the research is to reveal the main features of Bibik’s style. Methods of research include technical analysis of the works in the context of the innovative tendencies in the Ukrainian music of 1960–70s, as well as comparative research. Research results. Outstanding Ukrainian composer Valentyn Bibik (1940–2003) wrote over 150 works. Mostly they are large-scale symphonic, choral, vocal, and chamber pieces. Among them are 11 symphonies, over 20 concerti for various instruments with orchestra, vocal and choral cycles, chamber compositions (the last group includes 5 string quartets, 3 piano trios, sonatas for string instruments both solo and with piano), 10 piano sonatas, piano solo works (two sets of preludes and fugues – 24 and 34 total, Dies Irae – 39 variations). The composer was born in Kharkiv. In 1966 he completed studies at Kharkiv Conservatory, where he attended the composition class of D. Klebanov. Since 1994, he had been living in St.-Petersburg, and since 1998, in Israel where he died in 2003. Bibik’s formative period coincided with a substantive modernization of Ukrainian culture in the 1960s. During those years, members of the “Kyiv avantgarde” group (L. Hrabovsky, V. Sylvestrov, V. Godziatsky, et al.) sought to utilize modernistic idioms and techniques, such as free atonality, dodecaphony, sonoristic and aleatoric textures, cluster harmony, etc. Unlike the others, Bibik started with a more conservative style, which bore the influences of Shostakovich, Prokofiev, and Bartók. Bibik’s mature period started several years later in the early 1970s with Piano Trio No. 1 (1972) and the composition Watercolors for soprano and piano (1973). Together with his next piano work 34 Preludes and Fugues, these compositions show extremely individual features of Bibik’s style, such as: 1. Special treatment of the sound, which is considered not just a material for building certain musical structures but a self-valuable substance (Bibik has an original manner of organizing sound). Hence, timbral and textural aspects draw special attention to the composer. 2. The pitch and rhythmic structure of the themes is quite simple. A combination of several simple motives becomes the starting point of long and sophisticated development. These motives are derived from folk music, however, due to rhythmic transformation, they have lost their direct connection with the folk source. 3. Rhythmic structures areal so very simple. They often include sequences of equal rhythmic values (usually crotchets or eights). However, the composer avoids monotony dueto due to variable time signatures and permanent rubato, as well as significant flexibility in phrasing. 4. The development relies mostly on melodic and polyphonic elaboration of initial simple motives. The composer utilizes various kinds of polyphony, such as canonic imitations, various combinations of the main and supportive voices, heterophony, hyper-polyphony. In fugues he employs both traditional and new methods of thematic and tonal distribution. 5. The harmony in Bibik’s works is mostly modal, as well as a combination of modality with free atonality and extended tonality. The structure of the dense chords is close to clusters, while more transparent chords include mostly seconds and fourths (as well as their inversions). He almost never used traditional tonal harmony and chords built up from thirds, and was interested in their color aspect rather than their tonal functionalism. 6. The sonoristic texture is very important. It does not diminish the importance of the melody but gets into special collaboration with it (“singing sonority”). A special “mist” around a clear melodic line is one of Bibik’s most typical devices. Due to special “pedal” orchestration, both the line and the “surrounding” sounds become equally important. 7. Elements of limited aleatoric music may be found in his rhythm and agogics, and sometimes inpitch structures (passages and figurations with free choice of the pitches). His favorite technique is a superposition of two rhythmically and temporally independent textural layers (for instance, a combination of the viola solo and the sonoristic orchestral background in the third movement of the Fourth Symphony). 8. Sonata for mand the fugue were significantly reinterpreted within free atonality and modal harmony. These provisions are the scientific novelty of the study.

Abstract Recently, there has been an increased effort to unravel selective factors behind female song evolution in songbirds. Female birds which produce songs may sing either solo or in duets; although the 2 vocal performances likely evolved through different selection forces and mechanisms, the majority of large-scale studies to date have focused only on duetting or female song in general (pooling female solo song and duetting into a single category). Hence, here we estimate the effect of behavioral life-history traits (territoriality, social bonds, and cooperative breeding) and environmental productivity on the occurrence of female solo song and duetting separately in songbirds of South Africa and Lesotho. The focal region is characterized by subtropical/tropical climate, clear spatial environmental productivity gradient, and detailed knowledge on avian species distribution and behavioral life-history traits. Phylogenetically informed comparative analyses revealed that species where females produce only solo songs exhibited higher levels of territoriality than species with nonsinging females (in an univariable model) but, simultaneously, lower levels than duetting species. Although both species with female solo song and duetting establish mainly long-term social bonds, the former defend their territories seasonally while the latter exhibit mainly year-round territoriality. Cooperative breeding and environmental productivity were not associated with the distribution of female solo song and duetting in any model. Our results indicate that when exploring female song ecology and evolution, female solo song and duetting are likely to be distinct song categories associated with different levels of territoriality.

The present article is devoted to the general characteristics of the historical process of the formation of the sonata for the trombone (or with the participation of the trombone) in the European music of the Renaissance – Early Classicism era. A particular attention in the research has been paid to the study of the national stylistic, which was the main driving force in the evolution of the trombone at the level of the chamber instrumental and concert genres. It has been noted that since the time of A. Willaert and A. and J. Gabrieli brothers, the trombone and trombone consorts have been the permanent components of the concerts da chiesa, and later – da camera. Due to its construction and melodic-declamatory nature of the sounding, the trombone was in good agreement with both the voices of the choir and other instruments. Gradually, along with collective (concert) varieties of trombone sonatas, solo sonatas with bass began to appear, and they reflected the practice of the Baroque-era concert style. The article reviews a number of trombone sonatas of the Italian, Czech, Austro-German schools, which later became the model for composers of the Newest Time, who fully revealed the possibilities of the trombone semantics and techniques in the sonata genre. The article has noted that the formation of the instrumental sonata in Europe was associated with the practice of concerts in the church, which was for a long time practically the only place where academic music could be performed. The term “sonata” was understood then as the music intended for the instrumental performance, which, however, was closely connected with the vocal one. Therefore, the first samples of sonatas with the participation of the trombone were mixed vocal-instrumental compositions created by the representatives of the Venetian school of the second half of the 16th century – A. Willaert and A. and J. Gabrieli brothers. It has been noted that the key and largely “landmark” composition opening the chronicle of a concert sonata with the participation of trombones was the sonata called “Piano e forte” (1597), where the functions of trombone voices are already beginning to the counterpoint independence, rather than to duplicating the vocal ones. G. Gabrieli is the creator of one of the most large-scale, this time exclusively trombone compositions – “Canzon Quarti Toni” for 12 trombones, cornet and violin – one of the first trombone ensembles based on the genre of canzone as the progenitor of all the baroque instrumental-concert forms. It has been emphasized that among Italian masters of the subsequent period (the early Baroque), the trombone received a great attention from C. Monteverdi, who in his concert opuses used it as the substitute for viola da brazzo (three pieces from the collection called “Vespro della Beata Vergine”). It is noted that in the era of the instrumental versioning, when compositions were performed by virtually any instrumental compound, the trombone was already distinguished as an obligate instrument capable of competing with the cello. Sonata in D minor Op. 5 No. 8 by A. Corelli is considered a model of such a “double” purpose. It has been proved that the Italian schools of the 16th – 17th centuries, which played the leading role in the development of the sonata and concert instrumentalism, mainly the stringed and brass one and the brass one as well, were complemented by the German and Austrian ones. Among the masters of the latter one can distinguish the figure of G. Schütz, who created “Fili mi, Absalon” for the trombone quartet and basso-continuo, where trombones are interpreted as instruments of cantilena sounding, which for a long time determines their use in opera and symphonic music, not to mention the sonata genre (introductions and slow parts). Along with the chamber sonata, which was written in the Italian style, German and Austrian masters of the 17th century turn to “tower music” (Tower music), creating their own opuses with almost obligatory participation of one or several trombones. Among such compositions there are the collection by G. Reich called “Quatricinua” of 24 tower sonatas (1696) for the cornet and three trombones, where, modelled on A. Corelli’s string-and-bow sonatas, the plays of a homophonic and polyphonic content are combined. The article notes that the creation of a solo sonata with bass for the trombone was historically associated with the Czech composing school of the second half of the 17th century. The first sample of such composition is the Sonata for the trombone and the thorough-bass (1669), written by a certain monk from the monastery of St. Thomas in Bohemia, where the instrument is shown in a wide range of its expressive possibilities. A significant contribution to the development of a trombone sonata was made by the Czech composer of the late 17th century P. Y. Veyvanovsky, who created a number of sonatas, which, despite the typical for that time performing versioning (trombone or viola da brazzo), were a milestone in the development of the genre in question. The traditions of the trombone sonata-quality genre in its three main expressions – da chiesa, da camera, “tower music” – have been preserved for a certain time in the era of Classicism. This is evidenced, for example, by F. Schneider’s 12 “Tower sonatas” for 2 pipes and 3 trombones (1803–1804). In general, in the classic-romantic era in the evolution of the trombone sonata genre there is a “pause”, which refers to both its collective and solo varieties. The true flourishing of the trombone sonata appeared only in the Newest time (from the end of the 19th century), when the instrumental music of a concert-chamber type declared itself not only as the one demanded by the public, but also as the leading, “title” field of creativity of a number of the leading composers. Among the instruments involved in the framework of the “new chamber-ness” (B. Asafiev) was also the trombone, one of the recognized “soloists” and “ensemblers” of the music from the past eras. The conclusions of the article note that the path travelled by the sonata for the trombone (or with the participation of the trombone) shows, on the one hand, the movement of the instrument to the solo quality and autonomy within the framework of “little-ensemble” chamber-ness (the sonata duet or the solo sonata without any accompaniment), on the other hand, the sustainable preservation of the ensemble origins of this genre (the trombone ensemble, sometimes in combination with other representatives of the brass group).

Abstract Acoustic signals used in animal communication play a key role in mate attraction, species recognition, and territory defense. Variation in acoustic signals may reflect population structure, lack of gene flow, and phylogenetic relationships. In birds, the study of geographic variation in acoustic signals has been useful for elucidating potential factors involved in phenotypic divergence and for establishing species limits. However, most of the studies on geographic variation have focused on calls and solo songs, with few studies focusing on complex behaviors such as duets. In this study, we investigated the variation in the duets of the Rufous-naped Wren (Campylorhynchus rufinucha). Our results suggest that duets vary across the distribution range of the species complex, matching the 3 taxonomic groups previously suggested (rufinucha, humilis, and capistratus). We also found a marked song sexual dimorphism in 2 groups, rufinucha and humilis, that is lacking in capistratus. At the local level, we found that duets also vary among sites within groups, but less than between groups. Our results suggest that groups rufinucha and humilis sing the most similar duets, whereas capistratus performs the most divergent duets of the 3 groups. Further, when comparing duet variation across geography, we found that birds living closer to each other sing more similar duets. We suggest that the existence of 3 vocal lineages is probably the result of historical geographic isolation followed by other selective (i.e. sexual selection, social selection, habitat structure) and/or non-selective factors (i.e. drift, isolation by distance), and that variation found within groups may be the result of cultural drift or social selection.

Abstract Vocal duets occur when 2 individuals vocalize in temporal coordination. In birds, duet participation functions to cooperatively defend shared resources, localize mates, and in some species, guard the mate. Previous work indicates that duetting tends to co-evolve with a non-migratory lifestyle, probably because the absence of migration facilitates greater cooperation between mates. We examined the evolution of duetting and migration in New World warblers (Parulidae), a group that has been largely ignored by duetting research. Of the 95 species in our analysis, we found evidence of duetting in 19 (20%) species, and evidence of migration in 45 (47.4%) species. Ancestral character reconstruction indicated that the last common ancestor of the New World warblers did not duet. Duetting evolved multiple times in this group, including 2 early origins and several more recent origins. Migration was present in the last common ancestor and was lost several times. Both duetting and migration exhibit phylogenetic signal. A phylogenetically explicit correlation analysis revealed a significant negative relationship between duetting and migration, in keeping with findings from other avian taxa. This study, the first description of the evolution of duetting in a large avian family with a temperate-zone origin, supports the hypothesis that duetting co-evolves with a sedentary natural history in birds.

This document contains scores for the works performed at a recital of compositions by Kirsten Carlson at 8:00 p.m. April 21, 1995 at the University of British Columbia Recital Hall. Model-Deviation is written for solo flute and was composed in 1992. Those That Follow is written for two flutes and was composed in 1993. The Distance is written for soprano voice, spoken voice, violin and cello and was composed in 1993. The text is by Kirsten Carlson. For will is written for flute and trumpet and was originally composed in 1994 and revised in 1995. This is a photograph of me is written for soprano, clarinet, bassoon and violin. It was composed in 1995 with text by Margaret Atwood. The Swimmer is written for two soprano voices, flute, clarinet, two violins, viola, and cello. It was composed during 1994-95 with text by the composer. We Are Still One is written for 10 flutes and was composed in 1994.

Title page, table of contents and abstract; v.2: table of contents; v.3: table of contents only. The complete thesis in print form is available from the University of Adelaide Library.
This doctoral submission comprises three volumes and is entitled Twistonality: A Personal Exploration. Volume One consists of a portfolio of eleven original compositions, Volume Two is an exegesis and Volume Three contains live and/or computer-generated recordings of the music. The works are scored for a variety of instrumental and vocal combinations. The compositions explore the use of tonality as a basis for the creation of a uniquely personal style which incorporates musical gestures encountered in both traditional and contemporary performance practice. The term 'twistonality', devised for this submission, refers to a musical language in which a composer may express original ideas by twisting forms and tonal structures already resident in the conscious or subconscious memory in order to reflect his or her emotional reality as experienced through music.
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Thesis (Ph.D.) -- University of Adelaide, Elder Conservatorium of Music, 2007