Originally Posted by Psy-Fi

A few 'classic' rock groups and artists not on your list...

Quicksilver Messenger Service
Robin Trower
The Allman Brothers Band
Blues Magoos
Dantalian's Chariot
The Byrds
The Moody Blues
The Turtles
The Mothers of Invention
Savoy Brown
The Chocolate Watchband
Blue Öyster Cult
Black Sabbath
J.J. Cale
The Doors
David Bowie
The Electric Prunes
Lynyrd Skynyrd
King Crimson
The Music Machine
Blind Faith
Moby Grape