Hearts of Stone is the fifth studio album by American rock band Stoneground, released in 1978 on Warner Bros. Produced by Bob Gaudio, it marked Stoneground's return to a major label, having released their previous album, "Flat Out" (1976), on their own label. "Prove It" was released as the first single from "Hearts of Stone".
Stoneground released their first studio album in 1970 