Which rock band was formed first, Mazzy Star or A Perfect Circle?
Mazzy Star: Mazzy Star is an American alternative rock band formed in Santa Monica, California, in 1989 from the group Opal, a collaboration of guitarist David Roback and bassist Kendra Smith. A Perfect Circle: A Perfect Circle is an American rock supergroup formed in 1999 by guitarist Billy Howerdel and Tool vocalist Maynard James Keenan.
Mazzy Star