Yes have had many keyboardists over the years. They started with Tony Kaye, who stayed with the band until Fragile, where Rick Wakeman took over. He left the band briefly in 1974, where he was replaced by Patrick Moraz, but soon returned after the release of Relayer. Rick left the band after Tormato, and Geoff Downes played keyboards on Drama. When the band reformed in 1983, Tony Kaye was brought back on keyboards, who stayed there until 1995. (Rick Wakeman has appeared on the 1991 album Union). For their next album, Yes brought in Billy Sherwood, who was joined by Igor Khoroshev for The Ladder. They both left the band after The Ladder tour, and were not replaced for Magnification.