This research into Brazilian music in general, and choro guitar music in particular, focuses primarily on the various and contrasting ways in which the repertoire is interpreted by Brazilian choro musicians, classical guitarists and jazz guitarists. Socio-cultural traditions and conventions are also explored. An important facet of performance in the Brazilian tradition is improvisation. The appropriateness of various improvisational approaches, including those used in jazz, are discussed. The research incorporates two 60-minute recitals, one of traditional Brazilian choro and the other of different Brazilian styles played in a jazz group setting, and these are central to the following exegesis. / Thesis (M.Mus.) -- University of Adelaide, Elder Conservatorium of Music, 2008