Keef Hartley worked with what English musician and vocalist born in Liverpool in 1938?
Keef Hartley Keith "Keef" Hartley (8 April 1944 – 26 November 2011) was an English drummer and bandleader. He fronted his own eponymous band, known as the Keef Hartley Band or Keef Hartley's Big Band, and played at Woodstock. He was later a member of Dog Soldier, and variously worked with Rory Storm, The Artwoods and John Mayall.
Glenn Cornick Glenn Douglas Barnard Cornick (23 April 1947 – 28 August 2014) was a British bass player, best known as a founding member of the British band Jethro Tull. "Rolling Stone" has called his playing with Tull as "stout, nimble underpinning, the vital half of a blues-ribbed, jazz-fluent rhythm section".