Thain was a member of the so-called classic line-up 1972 - 1975. He died in drug overduse soon after been fired from the band.
LP DEMONS AND WIZARDS 1972
LP THE MAGICIAN'S BIRTHDAY 1972
2-LP LIVE JANUARY 1973 1973
LP SWEET FREEDOM 1973
CD LIVE AT THE KING BISCUIT FLOWER HOUR (release in 1997)
LP WONDERWORLD 1974
LP, CD LIVE AT SHEPPERTON '74 (released in 1986)
Before joining Heep Thain was a member of Keef Hartley band and in several other recording projects.