Yoso (originally to be called AKA) was a short-lived American rock supergroup combining former members of Yes (Tony Kaye and Billy Sherwood) and Toto (Bobby Kimball). It is a spin-off from the group CIRCA:.The band grew out of a plan for Kimball and Circa (consisting of Sherwood, Kaye, guitarist Jimmy Haun and drummer Jay Schellen) to play together on an Italian tour in early 2009.