I'll struggle to keep down to three like HP and CD so here's two definites!
Led Zeppelin and The Doors.
Perm any one from The Allmans, The Kinks, MoI, King Crimson, The Who, The Jam..............
Led Zeppelin and The Doors.
Perm any one from The Allmans, The Kinks, MoI, King Crimson, The Who, The Jam..............