Mystic Production
It has since expanded and has been releasing rock , punk rock , alternative rock , progressive rock and pop artists , and its roster currently includes names such as Behemoth , Acid Drinkers , Coma , Czesław Śpiewa , Grzegorz Turnau , Gaba Kulka , Happysad and KSU , among others . 
<triplet> punk rock <subj> rock <obj> subclass of <triplet> alternative rock <subj> rock <obj> subclass of <triplet> progressive rock <subj> rock <obj> subclass of <triplet> Coma <subj> alternative rock <obj> genre <triplet> Czesław Śpiewa <subj> alternative rock <obj> genre <triplet> KSU <subj> punk rock <obj> genre