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.
The Clefs The Clefs was an Australian pop-rock group that formed in Adelaide in the early 1960s. Under the leadership of keyboardist Tweed Harris the band performed as The Clefs from 1963 to 1967. Vocalist Barrie "The Bear" McAskill took over the group from Harris in 1967 and renamed it Levi Smith's Clefs. Throughout its career, the Clefs was notable as a training ground for young performers and its various line-ups included musicians who went to form many notable Australian rock groups of the late 1960s and early 1970s.