I saw a pre-Buckingham/Nicks Fleetwood Mac in 72' opening up for Deep Purple and it was the only time I ever saw the band live. Something I learned not long ago about FM and it pertains to founding members Peter Green and Mick Fleetwood. The 2 of them before FM played in another band together call Shotgun Express who had a frontman lead singer who would go on to make his own mark in music history. That singer? A young Rod Stewart!
Since we're on to iconic bands and former members, in 72' a band hit the prog music scene who had 2 former founding members from Yes in the persons of Peter Banks and Tony Kaye. The band was called Flash and they released 3 studio albums. I only saw them once in the summer of 72' touring with Uriah Heep, Wishbone Ash, It's a Beautiful Day and Ike and Tina Turner. Rain caused the show to be delayed and the whole thing moved indoors and by the time Ike and Tina closed out it was 4:30 am. People we so tired, everyone was just crashing out in the parking lot and about 9 am tons of hippies awoke and very hungry. The local eateries make a killing on the breakfast shift!
Here's Flash and their 72' hit Small Beginnings. If it sounds like early Yes, that was the Peter Banks influence or you might get a sense where Yes got their classic sound from.
[video=youtube;x2vwJBnJq7o]http://www.youtube.com/watch?v=x2vwJBnJq7o[/video]