Supergroup (bands)

In the late 1960s, the term supergroup was coined to describe music groups comprising members of great proficiency who had already achieved fame or respect in other groups or as individual artists. The term took its name from the 1968 album Super Session with Al Kooper, Mike Bloomfield, and Stephen Stills. The coalition of Crosby, Stills and Nash (later Crosby, Stills, Nash and Young) is another example.

Failed supergroups

• XYZ, ex-Yes and Led Zeppelin members who became a true supergroup on creation, despite the group not surviving long enough to produce any official albums.
• Tapeworm, probably the longest-existing rumored project that never came to be, with creator Trent Reznor having hinted at its existence for over ten years with no product in the end. Regular contributors cited included Maynard James Keenan (Tool / A Perfect Circle), Atticus Ross (12 Rounds / Error), Danny Lohner (Nine Inch Nails / A Perfect Circle), Page Hamilton (Helmet), and Phil Anselmo (Pantera / Superjoint Ritual) among others. The project did however generate one existing song, "Vacant", which was later rewritten entirely by some of the members' other band A Perfect Circle, renaming it "Passive" for their album eMOTIVE.
• Ginger Baker's Air Force