Eric Clapton (with vocals, guitar), Robert Cray, Buddy Guy, Hubert Sumlin (with vocals), Jimmie Vaughan (with vocals), B.B. King (with vocals), James Taylor (guitar), Joe Walsh (with vocals), Bobby West (bass guitar), Carole King (piano), Chris Darrow (violin), Danny Kootch (guitar), John London (bass guitar), Randy Meisner (bass guitar), Red Rhodes (steel guitar), Russ Kunkel (drums), Vince Gill (with vocals), Jerry Douglas (with vocals), J.J. Cale, Doyle Bramhall II (with vocals), Sonny Landreth, John Mayer, Carlos Santana, Jeff Beck (guitar), Alan Branch (recorder), Jason Rebello (keyboards), Tal Wilkenfeld (bass), Vinnie Colaiuta (drums), Susan Tedeschi, The Derek Trucks Band (with vocals), The Robert Cray Band (with vocals), Sheryl Crow (with vocals), Albert Lee (with vocals), Willie Nelson, Los Lobos, Cesar Rosas (vocals, with vocals), Steve Winwood, ZZ Top, Billy Gibbons (guitar), Dusty Hill (bass guitar), Frank Beard (drums), Gary Clark Jr. (guitar, with vocals), Earl Klugh (with vocals), James Burton (with vocals), Keb' Mo' (with vocals), Derek Trucks, Susan Tedeschi Band, Chris Stainton (with vocals), David Hidalgo (with vocals), Warren Haynes (with vocals), Narada Walden (drums), Rhonda Smith (bass guitar), Jonny Lang (with vocals), Ronnie Wood (with vocals), Booker T., Blake Mills (with vocals), Matt "Guitar" Murphy (with vocals), Steve Crooper (with vocals), Keith Urban (with vocals)
