[natep]

Neither method really works for Jazz, though. Sometimes, the group would have a name, but many times, only one person's name is on the album cover. But, some great musicians never fronted a band, and none of them are bandleaders for their whole career, and sometimes the lineup of a group would change while the name stayed the same.

[wallflower]

Total Off-topic but have you been to the Rutgers Jazz Library?

http://www.libraries.rutgers.edu/rul/libs/jazz/jazz.shtml