Preston started off at the age of 10 playing keyboards for gospel legend Mahalia Jackson. Later he joined Ray Charles' touring band before recording with The Beatles on several of their tracks including "Get Back
" and "Let It Be
" (The Beatles considered him to be the fifth Beatle). He also played on a number of Sly & The Family Stone recordings and went on to have a successful solo career with five Top 10 US hits. In 1997 he was sent to prison on drug charges; he died in 2006 at age 59.