Vocal overdubs followed on June 4 at Columbia studio. Wilson recorded the Beach Boys' vocals using Columbia's new 8-track recorder, allowing Love's lead vocals to be triple-tracked and the group's vocals spread over three more. According to historian Keith Badman, the song still lacked "a proper title", as Wilson can be heard referring to it as "Yeah, I Dig the Girls" on the session tape. It was the first Beach Boys recording to feature vocals from Bruce Johnston, who had recently joined the group to substitute for Wilson on concert tours. As Johnston remembered, "I came home from The Beach Boys' tour June 1 and they said, 'Why don't you come and sing on our next album?' The first song I sang on was 'California Girls'. At this point I still wasn't a proper member of the group."