Originally from Melbourne, Australia — Hanna has been playing electric guitar in groups since 1971. He studied with Felix Werder and in 1977 joined Ollie Olsen's Whirlywirld.

After moving to Sydney in 1986 he was a member of Jackie Orszaczky's The Grandmasters, and has played guitar for artists including Michelle Morgan (2), Coco Robicheaux, Terry Evans, John King Cleary, Renee Geyer, Marcia Hines, Deni Hines, Nick Cave, Michael Spiby, Jackie Orszaczky & Jim Conway.

He also composes and performs with "Attaclapse" his own Afro-funk orchestra, and guests with Slewfoot.