[1] From the age of 16 Orr also played the trumpet, as a member of Basil Kirchin's band; however, he had difficulties with his embouchure and returned to the drums.
[1] In the 1950s and 1960s, Orr was a fixture on the London jazz scene, including as a founder member of Joe Harriott's quintet[3] (which he left and subsequently rejoined) and for Tubby Hayes and others.
[1] He also served as a house drummer at Ronnie Scott's Club, backing top American visitors such as Zoot Sims, Al Cohn, Milt Jackson, and Dizzy Gillespie.
[1] As an aside from his jazz career, he also played on many recording sessions for pop and rock artists such as Donovan and Dusty Springfield.
[2] With Sandy Brown With George Chisholm With Digby Fairweather With Benny Goodman With Joe Harriott With Shake Keane Main source:[4]