 Drummer Clive Bunker who was a friend of Abrahams then joined them to form Jethro Tull.Cornick toured and recorded with Jethro Tull from late 1967 to late 1970.He played in the three first studio albums of the band, "This Was", "Stand Up" and "Benefit", playing an important role in the arranging of the music, being one of the few members of Jethro Tull with some musical learning.