supergroup

su per group |ˈso͞opərˌgro͞op ˈsuːpərɡruːp | ▶noun an exceptionally successful rock group, in particular one formed by musicians already famous from playing in other groups.

supergroup

super |group |ˈsuːpəɡruːp, ˈsjuː -| ▶noun an exceptionally successful rock group or one formed by musicians already famous from playing in other groups.