Ian "Fly" Harper is the bass player and trumpet player in P-Theory.

Known as Fly in recognition of his 6 ft 7 Inch frame, Fly became a friend of the band through his association with Wiggles and the Birmingham reggae scene.  Fly made his first appearance on "Chocolate Sock", P-Theory's second album as the trumpet player alongside the incredible trombone Geraint Davies and alto sax player Rico Garafolo.  

The band asked Fly to join the band as the bass player following the recording sessions for P-Theory's third album "Redemption".