There used to be a thread on here about a Secret Falsetto on the Little Deuce Coupe album besides Brian, it's Chuck! We now know! You can hear him on the fadeout of No Go Showboat.
Chuck sang on No Go Showboat by The Timers, which featured co lead vocals by Brian and Gary Usher. Chuck has only featured on one Beach Boys track and that was Why Do Fools Fall In Love, on which he provided hand claps. On the other side of No Go, though, was the superb Competition Coupe.
There could well be a feature on Chuck in the next edition of The Ugly Things magazine.
It would have been fascinating to hear Chuck sing lead on a Beach Boys song given his nasal-sounding singing. His vocals on tracks like Little Honda, My Buddy Seat, My Little Bike and the above tracks are definitely some of the best of the surf/hot rod genre.