[4] Heller also formed the band System Divide[5] and is a session drummer with credits in many genres.

[2] Heller traces his musical and drumming influences across many genres, including gospel, Latin jazz and funk.

[8] He joined the Yonkers, New York-based technical death metal band Malignancy in 2003, replacing Roger J. Beaujard.

[5][11] Heller performed on the 2020 debut album by Amahiru, a musical project led by Frédéric Leclercq and Saki.

[12] Heller has also recorded with bands and artists including Edei, Ryann, 208 Talks of Angels, Measure, Razorcult, Chikatillo, Pseudo Supremacy, Hollow, Death Dealer and Cryosaur.