This study focuses on a guitar duo transcription of four keyboard sonatas composed by the north German Cantor, Christian Gotthilf Tag (1735-1811). While the works were never published and the original manuscripts are lost, the music survives in manuscript copies made by K.H.L. Pölitz, which have served as the source. After a brief discussion of the composer and his life, the author explores transcription techniques used in previous duo transcriptions. The study gives a detailed rationale for the editorial methodology used, with examples from the present transcriptions. A separate volume includes the sonata transcriptions laid out in parallel to the keyboard edition, and provides brief performance instructions, mostly regarding ornamentation. The four sonatas add up to a collective length (including repeats) of approximately 60 to 70 minutes of music.

Este trabalho tem como objetivo compreender os processos composicionais contidos no Op. 199, Les Guitares bien Tempérés, de Mario Castelnuovo-Tedesco (1895-1968). Este ciclo de 24 prelúdios e fugas é a maior obra original para duo de violões e, vindo de um compositor não-violonista, contextualizam-se, aqui, pontos importantes de sua formação, de seus intérpretes e de seu período. Algumas perguntas se destacam no percurso da pesquisa: quem foi este compositor? Quais foram os fatos mais marcantes de sua formação musical? Por que esta obra é tão importante para a formação de duo de violões? Qual é o perfil bibliográfico que se encontra para a produção deste trabalho? E, principalmente, como se pode descrever o estilo desta obra? Fundamentando-se em referenciais teórico-metodológicos (STEBLIN, 1982; LARUE, 1992; OTERO, 1999; entre outros), o trabalho parte dos sentidos tradicionais do Prelúdio e da Fuga e de como o compositor se relaciona com eles. Mostra como resultados da pesquisa os parâmetros musicais, que permeiam a obra como um todo (macroestrutura) e dialogam entre as partes (média e microestrutura), entrecruzando os elementos contribuintes (som, harmonia, melodia e ritmo) e outros desdobramentos (tonalidades, texturas, intensidades, harmonias, melodias, andamentos, expressões e afetos/humores). Desse modo, a pesquisa levou à compressão de diversos processos composicionais contidos na obra. / The aim of this work is to understand the compositional techniques employed by Mario Castelnuovo-Tedesco (1895-1968) in his Op. 199, Les Guitares bien Tempérés. This cycle of 24 Preludes and Fugues for two guitars is known as the largest original work for guitar duo and, coming from a non-guitarist composer, elucidates various aspects of his background and the performance of his works. Some of the most important questions addressed include: Who is Castelnuovo-Tedesco? What were the highlights of his musical training? Why is this work so important to the guitar duo ensemble? What kind of bibliographic references are available on this work? And, most importantly, how can the style of this work be described? This work in based on theoretical-methodological references (STEBLIN, 1982; LARUE, 1992; OTERO, 1999; among others), it begins with a discussion of the composer\'s approach to the traditional definitions of Prelude and Fugue. The results of this research highlight the musical guidelines that permeate the work both as a whole (macrostructure) and in parts (middle and microstructure), crossing contributing elements (sound, harmony, melody and rhythm), and other details (keys, textures, dynamics, harmonies, tempos, expressions and affections/humor). Thus, this research has led to the understanding of multiple compositional processes contained in the work.

Este trabalho tem como objetivo compreender os processos composicionais contidos no Op. 199, Les Guitares bien Tempérés, de Mario Castelnuovo-Tedesco (1895-1968). Este ciclo de 24 prelúdios e fugas é a maior obra original para duo de violões e, vindo de um compositor não-violonista, contextualizam-se, aqui, pontos importantes de sua formação, de seus intérpretes e de seu período. Algumas perguntas se destacam no percurso da pesquisa: quem foi este compositor? Quais foram os fatos mais marcantes de sua formação musical? Por que esta obra é tão importante para a formação de duo de violões? Qual é o perfil bibliográfico que se encontra para a produção deste trabalho? E, principalmente, como se pode descrever o estilo desta obra? Fundamentando-se em referenciais teórico-metodológicos (STEBLIN, 1982; LARUE, 1992; OTERO, 1999; entre outros), o trabalho parte dos sentidos tradicionais do Prelúdio e da Fuga e de como o compositor se relaciona com eles. Mostra como resultados da pesquisa os parâmetros musicais, que permeiam a obra como um todo (macroestrutura) e dialogam entre as partes (média e microestrutura), entrecruzando os elementos contribuintes (som, harmonia, melodia e ritmo) e outros desdobramentos (tonalidades, texturas, intensidades, harmonias, melodias, andamentos, expressões e afetos/humores). Desse modo, a pesquisa levou à compressão de diversos processos composicionais contidos na obra. / The aim of this work is to understand the compositional techniques employed by Mario Castelnuovo-Tedesco (1895-1968) in his Op. 199, Les Guitares bien Tempérés. This cycle of 24 Preludes and Fugues for two guitars is known as the largest original work for guitar duo and, coming from a non-guitarist composer, elucidates various aspects of his background and the performance of his works. Some of the most important questions addressed include: Who is Castelnuovo-Tedesco? What were the highlights of his musical training? Why is this work so important to the guitar duo ensemble? What kind of bibliographic references are available on this work? And, most importantly, how can the style of this work be described? This work in based on theoretical-methodological references (STEBLIN, 1982; LARUE, 1992; OTERO, 1999; among others), it begins with a discussion of the composer\'s approach to the traditional definitions of Prelude and Fugue. The results of this research highlight the musical guidelines that permeate the work both as a whole (macrostructure) and in parts (middle and microstructure), crossing contributing elements (sound, harmony, melody and rhythm), and other details (keys, textures, dynamics, harmonies, tempos, expressions and affections/humor). Thus, this research has led to the understanding of multiple compositional processes contained in the work.

Due to the limited repertoire for the guitar from the Baroque period, classical guitarists who wish to perform music from this era have to work primarily with transcriptions. Guitarists draw from various sources from this period such as vocal and instrumental music for the five-course guitar, lute and the harpsichord. Of these sources, the repertoire for the harpsichord is perhaps the most frequently arranged for various guitar formations because its textures are greatly similar to those of the guitar repertoire. As a result, harpsichord music tends to transfer well to the guitar. Baroque harpsichord composers such as Domenico Scarlatti, Johann Sebastian Bach, François Couperin, and Jean-Philippe Rameau-to name a few-have a permanent home in the classical guitar canon and represent the musical tastes and styles of Italy, Germany, and France. These composers exemplify the various stylistic differences between the above-mentioned countries; yet, the harpsichord music of Spain is largely underrepresented in guitar collections. One of the most noteworthy Spanish harpsichordists was Padre Antonio Soler (1729-1783), who composed 120 sonatas for the instrument. When considering the ease with which some of his works transfer to the guitar, and specifically guitar duo, much can be gained by expanding the repertoire and exploring the Spanish Baroque style. The purpose of this study is three-fold: first, to present transcriptions of Antonio Soler's Sonata No. 85 and Fandango for guitar duo; second, to provide analysis of Sonata No. 85 with an emphasis on the intervallic features of the motives; third, to give an overview of the transcription process of Fandango for guitar duo while including a study of Spanish Baroque guitar and the appropriate stylistic effects drawn from its repertoire that can be incorporated in the arrangement.