He was a (studio & live) session drummer of Terrorhammer (2010-2013), when he left the band. He also left his other bands he used to played - session drums in Triumfall (2012-2013), and Awaiting Fear (2010-2013) as a full time drummer. He stated that he wants to focus on jazz now...
Bands he also plays/played with:
Kolac was but an Hardcore band from Pančevo, not this Kolac