 "What Am I Living For" from "Mark-Almond 73" gained the group the most U.S. radio airplay they would get, but nevertheless they disbanded later that year.Mark released a solo record for Columbia "Song for a Friend" in 1975.He and Almond reunited in 1975 and released "To the Heart" on ABC Records (which had acquired Blue Thumb) in 1976, which featured the drummer Billy Cobham.