Carl's studio vocals are what MAKE the song. Although I have to say that Mike's vocals are very good on the studio recording too, and as much as people might have issues with the song not being "BBs" enough, or too cheesy, Mike does sing well in this register. But without Carl's vocals, it's just weak sauce. Carl literally made the song.I have a hard time hearing any other Beach Boy trying to sing Carl's vocals on ANY song. God Only Knows, Good Vibrations, Darlin', Kokomo - there's a reason that guy was special. THAT voice!