About John Glascock
John Glascock was a British musician. He was the bassist and occasional lead vocalist of the rock band Carmen from 1972 to 1975; and the bass guitarist for progressive rock band Jethro Tull from 1976 until his death in 1979. Glascock died at the age of 28 as a result of a congenital heart valve defect, which was worsened by an infection caused by an abscessed tooth. In a September 1978 Guitar Player interview, Ritchie Blackmore said "John Glascock is a brilliant bass player, the best in the business in rock." The first band John Glascock played in was The Juniors (1962–1964). He received no writing credits in Jethro Tull, but sang backing vocals and became the band's first harmony vocalist. Tull's guitarist, Martin Barre, said in the "Classic Artists Series" documentary that Glascock's love for the band was unique, in that he was a fan of Jethro Tull who became a member of the band.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.