Gilbert "Gilby" J. Clarke (born August 17, 1962) is an American musician, singer, songwriter and record producer best known for a 3-year tenure as the rhythm guitarist of Guns N' Roses, replacing Izzy Stradlin in 1991 during the Use Your Illusion Tour. Following his departure from the group, Clarke went on to forge a solo career as well playing guitar with Slash's Snakepit, Kat Men, Heart, Nancy ...