I thought the thread was about 1 to 3 hit wonders? The BeeGees were a hit machine during the 70's. In fact, the BeeGees had more #1 hits than any other artist/group for the 70's at 9.
Well not short after the pair joined Yes, for the Drama album when Jon Anderson and Chris Squire had a rift. Geoff Downs went on to form Asia with Yes guitarist Steve Howe.
Burton Cummings is a legend, original member of The Guess Who (American Woman, No Sugar Tonight, These Eyes), he actually did a great version of You Ain’t Seen Nothing Yet made famous by fellow Guess Who members in Bachman Turner Overdrive.
Larry Gonsky, one of the guys from Looking Glass, which recorded "Brandy," wound up as one of my sons' middle-school music teachers in New Jersey.