Australian band Avion's lead guitarist and lead singer, Randall Waller had previously released two albums as a solo artist, Oasis (1978) and Midnight Fire (1980). In 1981 Waller formed pop rock group Lionheart in Sydney – the group was soon renamed as Avion - which disbanded in 1987 after the death of their keyboard player. He was guitarist for Dragon (5) in 1989.

Since then he has been involved with:
Keith Urban 1999–2001 (guitar and vocals)
Shania Twain 1998–2004 (guitar and vocals)
Rose Tattoo July 2011 onwards (guitar)