useless trivia: What Word Means: A Group Of A Species?

Questions

Musical R: He sang the controversial "I wanna be black" and he really did want to be?

Musical R: Jeff Beck used to drown him out when he tried to sing?

Musical R: Nick Lowe and Dave Edmunds were the core of this pop group?

Musical R: They sang happy birthday to Monty Burns on "the simpsons"?

Musical R: Co-hosted "Hee-Haw" TV program with Buck Owens?