• August 10th, 1947 - Dunfermline, Scotland

• The Blades (1963 - 1965) - vocals, harp
• The John Evan Band (1965 - 1966) - vocals
• John Evan's Smash (1966 - 1967) - vocals
• Jethro Tull (all lineups 1968 - 1998) - vocals, flute

Appearances outside Jethro Tull:

• Solo album: Walk Into Light (1983)
• Solo album: Divinities: Twelve Dances with God (1994)
• Solo album: The Secret Language Of Birds (2000)
• Producer: Steeleye Span - Now We Are Six (1974)
• Guest musician: Roy Harper - Valentine (1974)
• Guest musician: Brian Protheroe - I/You (1976)
• Guest musician: Maddy Prior - Woman In The Wings (1978)
• Guest musician: Honeymoon Suite - The Big Prize (1986)
• Guest musician: We Know What We Like - The Music Of Genesis (1987)
• Guest musician: Men Without Hats - Pop Goes The World (1987)
• Guest musician: The Six and Violence - Lettuce Prey (1996)
• Guest musician: Mick Abrahams - One (1996)
• Guest musician: Blackmore's Night - Shadow Of The Moon (1997)
• Guest musician: Jackie Lynton - Pinboard Wizards (1998)
• Guest musician: Clive Bunker - Awakening (1998)
• Guest musician: Roy Harper - The Dream Society (1998)
• Guest musician: SAS Band - SAS Band (1998)
• Guest musician: Vyktoria Pratt Keating - Something About Driving (2000)
• Guest musician: Uriah Heep - Acoustically Driven (2001)
• Performer: Mandoki - People (1994)
• Performer: Mandoki - People In Room No. 8 (1997)
• Performer: Mandoki - The Jazz Cuts (1997)
• Performer: Mandoki - So Far... Collected Songs (1998)
• Performer: Mark Craney and Friends - Something With A Pulse (1997)
• Performer: Earthrise: The Rainforest Album (1994)
• Performer: Rattlesnake Guitar: The Music of Peter Green (1995)