Double Bass Mania IV lays down the brutal groove. With a cohesive collection of grooves spanning tempos from 90 bpm heavy rock to 120 bpm power metal, Double Bass Mania IV features the grooves to take any metal project to new levels of ferocity. Intense rhythmic figures as well as straight-ahead grooves to deliver the goods to all metal songwriters, Double Bass Mania IV: Groove Metal is the only commercial drum sample library dedicated to this genre.