I've got another Beach Boys question, that I've been asking myself without doing any research whatsoever. It's been said that Brian got into depression after he abandoned SMiLE and that he was "locked" in his bedroom for 3 years or so (I think). That means '67 - 70, right?
It's a myth that Brian locked himself up in his bedroom for three whole years. He just stayed in bed a lot, but not "full time". It's not like he wouldn't come out at all for weeks in a row. He just didn't do a whole lot. That lasted I'd say until 1982, with a brief "comeback" circa 1976-1977.
I'm looking right now to their 1967 album, "Wild Honey", the 1968 "Friends" and the 1969 "20/20" and they all have plenty of written songs credited to Brian and even sung by him. How come? He still kept on recording and writing? Or are they songs written before, during the "Pet Sounds" or "SMiLE" sessions?
From the top of my head:
Smiley Smile: mostly recycled Smile material.
Wild Honey: mostly new material with a couple of Smile bits.
Friends: all new material.
20/20: mix of older recordings (from late 1966 on), and songs recorded without Brian.
Sunflower: all new material except 'Cool Cool Water' (Smile era).
Surf's Up: title track dates back to the Smile days, rest is new material (and a couple of 'Sunflower' leftovers).