Categories and networks in jazz evolution: The overlap between bandleaders’ jazz sidemen from 1930 to1969
This paper expands on Peterson’s process model for historical changes in jazz. Peterson suggests that, given certain circumstances, musical genres migrate from ‘low-brow’ to ‘high-brow’.I test this proposition for jazz by investigating whether bandleaders were associated through the same sidemen (‘sidemenoverlap’) across time, and the underlying logics leading to these overlaps. I confirm Peterson’s model to the extent that sidemen overlap shifts from a ‘commercial’ logic to a ‘style-based’ logic. From1930to1949, sidemen overlap between bandleaders is mainly predicted by recording session.