1) A scientific sociological study that rigorously establishes how female discrimination really works in jazz worlds in the 2000s, 2) Demonstrates how female jazz musicians are invisibly discriminated in the French jazz world and the ways some of them do access to jazz professional music anyway --- and how that applies to the greater jazz world. 3) Shows different "rules" for female singers vrs instrumentalists: female singers are affected by a stereotypical confinement in a "feminine" profession, while female instrumentalists must build themselves into a public "male" job

1) A scientific sociological study that rigorously establishes how female discrimination really works in jazz worlds in the 2000s, 2) Demonstrates how female jazz musicians are invisibly discriminated in the French jazz world and the ways some of them do access to jazz professional music anyway --- and how that applies to the greater jazz world. 3) Shows different "rules" for female singers vrs instrumentalists: female singers are affected by a stereotypical confinement in a "feminine" profession, while female instrumentalists must build themselves into a public "male" job