Between 1972 and 1980 Ahipene-Mercer worked in London, UK, playing in pub bands, and returned to New Zealand to tour with the Rocky Horror Show in 1978. By that time, he had begun training in making guitars, with the aim of becoming a full-time Luthier. He returned to Wellington in 1980 as a Luthier, but has continued to play guitar both for pleasure and semi-professionally. He organised and performed in "Rock against Racism" concerts in Wellington in the early 1980s and worked with other bands such as the Wayne Mason band and Blue Highways. He has composed and recorded music for children's stories and some films, and took part in concerts for causes such as medical aid for Iraqi children, child cancer and the Mary Potter Hospice. He claims to have played in every hall in Wellington. Ahipene-Mercer is an external assessor of live music performance at Whitirea Polytech, as a member of the music advisory board. He is a member of the Board of Studies at Te Toi Whakaari New Zealand Drama School.