Solo 12 15 24 28 Ai Al Jarreau Andrea Bocelli Barbra Streisand Bee Gees Bryan Adams Clay Aiken Dalbello Dan Seals Diana Krall Disturbed Dolly Parton Earth, Wind & Fire Eric Benét Faith Evans Gary Barlow Gary Barnacle George Harrison Hall & Oates Jessie J Josh Groban Katherine Jenkins Lynyrd Skynyrd Michael Bublé Michael Jackson Natalie Cole Night Ranger Olivia Newton-John Patti Austin Patti LaBelle Paul McCartney Paula Cole Ringo Starr Rod Stewart Roger Daltrey Russ Ballard Sparks Taylor Dayne Tommy Bolin Yes