At their beginning, Aborym welcomed Atilla solely as a guest vocalist for their debut album. Then, on the Fire Walk With Us! and With No Human Intervention, he took the reigns and covered all vocal duties. But as of March 2005, Atilla left Aborym as a full time member to rejoin Mayhem.

Aborym participated in a 2003 Tribute album to Burzum, "Visions", contributing a cover of Det Som En Gang Var, which was also found on the Fire Walk With Us album.