Michael Gassen "Mike" Stewart (April 19, 1945 – November 13, 2002) was the co-founder and guitarist for We Five and a Grammy nominee. As a music producer he produced Billy Joel's breakthrough Piano Man album, as well as artists such as Tom Jones and Kenny Rankin, among others.We Five, known for their relatively complex harmonies, released "You Were on My Mind", which reached No. 1 in Cashbox and No. 2 on Billboard's hits list (song remains a favorite on oldies radio playlists), and We Five received a best new group Grammy nomination. The next year, they had a Top 40 hit with "Let's Get Together".