Jefferson Airplane
Cat Stevens
CSN and Y several times
Fleetwood Mac a few times
Poco
Kenny Loggins
Firefall
Jim Croce
Cowboy Junkies
BB King
Eta James
Joe Bonamassa
Springsteen
South Side Johnny
Jorma Kaukonen
Eagles
Doobie Bros
Poco
Ozark Mountain Daredevils
Santana
George Winston multiple times
Ramsey Lewis
Stevie Wonder
Jethro Tull
Big head todd and the monsters
Carole King
Neil Diamond
Harry Chapin
Stacy Kent
Jane Monheit
And at least 7-8 more that I cant remember
