An image from Jethro Tull - Live at the Capital Centre, one of the productions that also features John Evan.
John Evan
March 28, 1948 — Blackpool, England, UK
John Evan (born John Spencer Evans; born 28 March 1948, in Derby, Derbyshire) is a British musician and composer. He is best known as the keyboardist for Jethro Tull from April 1970 to June 1980.