In 2003, Kummerer created the black metal band Thulcandra which released four full-length albums through Austrian major label Napalm Records.

With "Death to All", Kummerer toured in Europe, Central and South America alongside former members Steve DiGiorgio (Testament, Sadus), Gene Hoglan (Dark Angel, Strapping Young Lad, Devin Townsend, Fear Factory, Dethklok and Testament), Paul Masvidal (Cynic), Sean Reinert (Cynic) and Bobby Koelble.

In 2017, a collaboration with Panzerballett under direction of Jan Zehrfeld featuring Mike Keneally (Frank Zappa, Joe Satriani), Jen Majura (Evanescence) and Mattias IA Eklundh was released.

Kummerer produced various music videos "Anticosmic Overload", "Akroasis", "Ten Sepiroth", graphic concepts, books and stage productions for various artists.

Kummerer endorses ESP Guitars, ENGL amplification, Steinberg, Ernie Ball, Sennheiser, Richter Straps, Presonus, EMG Pickups, Jericho Gehäuse, Scott Dixon, Arobas software, Celestion speakers & TC Electronic.