QUOTE(Mark @ Feb 3 2005, 09:10 AM)
We know it isn't Stamos ! I have a vocal and Jazz impressions of Brian's work which is great but no Forever on it. I guess we go to the grand wizard of Oz, thats Viper

I found this while surfing the web. I don't know if it sheds any light on anything:
John Stamos and I have recorded several different versions of "Forever" throughtout the years - in styles ranging from "piano w/gospel choir" to an intentionally bad "rap meets 'I Dream of Jeannie'" rendition; both for his 80s-90s sitcom "Full House". Ultimately, we cut a version with John singing lead and Mike, Bruce, Carl and Al providing wonderful harmonies which became a part of the Beach Boys' Summer in Paradise CD. Then for the miniseries (The Beach Boys, An American Family 200 ABC-TV), engineer Mark Linett dubbed a track of Dennis original lead vocal from the 1969 8-track master for me to fashion a "piano-vocal" mix which Nick Stabile could then perform to in the show.
Gary Griffin, Endless Summer Quarterly December 2000
The site is called denniswilsonforever.com