Correct, the single version was on "Summer Days (And Summer Nights!)". Endless Summer also had the album version (from "Little Deuce Coupe") of "Be True To Your School". It wasn't until the 80's when I heard the single version on a oldies radio show. I never cared for the album version, but wow, I dug the marching band arrangement. BTW I've never found the single BTTYS in duophonic anywhere (Good!).