20 Adele B. B. King Billy Preston Bo Bice Bob Seger and the Silver Bullet Band Boz Scaggs Dan Fogelberg Eddie Money El DeBarge Fall Out Boy Glenn Frey Goo Goo Dolls Harry Styles Herbie Hancock Joe Cocker Katy Perry Kimberley Locke Little Feat Luis Miguel Natalie Cole Neil Diamond Olivia Newton-John Patti Austin Patti LaBelle Paul Young Peabo Bryson Pet Shop Boys Portugal. The Man Rita Coolidge Roberta Flack Rod Stewart Santana Taylor Hicks Teddy Pendergrass Wang Chung Whitney Houston Xavier Rudd