Shelly S. · CC BY-SA 2.0

Howard Kaylan co-founded the Turtles and sang lead on their hits, then spent the 1970s as half of Flo & Eddie with bandmate Mark Volman, touring and recording as part of Frank Zappa's Mothers of Invention under the stage name Eddie before the duo struck out on their own, becoming ubiquitous backing vocalists across rock records of the decade.