No if about it regarding the names you cite, Valerie.
Puilling out the old bi-sexual card is just plain naïve—perhaps with a bit of wishful thinking or denial thrown in. You have been on the scene long enough to know that any gay jazz musician had to play the game and at least appear to be bi-sexual, but even that was not accepted—except when it came to women. For some reason, perhaps because many men like to see two women make love, same-sex affairs (or just dancing and holding hands) was quietly acceptable.
If a man wants to have sex with another man, and enjoys it, you can call him a grapefruit, bi-sexual, curious, or whatever.. he is as gay as the man who expresses his desires openly.
http://www.nytimes.com/2011/08/23/health/23bisexual.html?scp=1&sq=bi-sexual&st=cse