The "Clang-ding-dangin'" round at the end owes much to the still unreleased "Clang" from late 1975 (but not "Clangin'", which is another song entirely based on the "I'm The Pied Piper" riff" - still with me ?). Sounds a bit like something from TLOS, no ?
Wait. So let's get this right, once and for all.
"Clang" has the "clang-ding-dangin" thing. This is from 1975.
"Clangin'" has the "I'm The Pied Piper" riff and "mow-mama-yama". This is from 1974, and was worked on again in 1976.
Correct?
Not exactly... "Clang" is the "mow-mama-yama-holy-hallelujah" chant (
vide the 1976
Rolling Stone David Fenton mega-article, the one with Brian on the cover w/bathrobe & surfboard. Moses Wilson). Otherwise, yes, and my source defines the word "impeccable".
God bless the Beach Boys! Beyond our personal orbit, could you imagine explaining to someone the finer points of "mow-mama-yama-holy-hallelujah?"

There was also a spread in People magazine about this. Brian looked even worse in it. Apparently, at the time, he had a phone booth in his house (like a Doctor Who style thing) that he used as a hiding place.
That actually sounds kinda cool to me. Pure wacky indulgence. I bet that Melinda put a stop to that. She's no rock and roll fun.
