Philip John Albert "Jon" Hiseman was an English drummer, recording engineer, record producer, and music publisher. He played with the Graham Bond Organisation, with John Mayall & the Bluesbreakers and later formed what has been described as the "seminal" jazz rock/progressive rock band, Colosseum. He later formed Colosseum II in 1975.

Graham John Clifton Bond was an English rock/blues musician and vocalist, considered a founding father of the English rhythm and blues boom of the 1960s.