“…18 Musicologists have also long studied the variation introduced during transmission of musical works. 19 Stemmatic analysis has been used, for example, in studies of the Aquitanian Versaria 20 and the organ music of Christopher Gibbons (the second son of Orlando), 21 and the significance of serial recomposition in variant transmission has been discussed by Herissone. 22 Although phylogenetic methods have been shown to be valuable tools in the analysis of the transmission of textual sources, very little work has been done on applying these computer-based methods to musical text, 23 although such an approach has been used for studies of rhythm, 24 and cluster analysis has been applied to some manuscripts from the Well-Tempered Clavier II tradition, 25 and used to study the relationship between folk music melodies and population genetics.…”