Who's Who? is a studio album by American jazz guitarist John Scofield. It features two different bands, one acoustic and one electric. The acoustic group, featuring Scofield's then-employer Dave Liebman on saxophones, Eddie Gómez on bass, and Billy Hart on drums, recorded "The Beatles" and "How the West Was Won". The electric group, featuring future Kenny Kirkland on keyboards, Anthony Jackson on electric bass, Steve Jordan on drums, and Sammy Figueroa on percussion, recorded the balance of the album. The sessions were recorded in 1979 at The Platinum Factory studios in Brooklyn, New York. The bonus tracks appeared on the 1980 album Bar Talk, issued only in Japan, that introduced the John Scofield Trio on record.