My favorites:
- '50s/early '60s Rock 'n' Roll (Elvis, Buddy Holly, Everly Bros., etc.)
- '50s/early '60s Doo-Wop (The Flamingos, The Platters, The Skyliners, etc.)
- Early to mid-'60s Folk (New Christy Minstrels, Brothers Four, Kingston Tio... NOT Bob Dylan).
- Some '60s/'70s Country
- Some '70s Rock (Eagles, Fleetwood Mac, Doobies, etc.)