The Daray Dimmu Borgir MIDI Grooves is an electronic download expansion pack for Hertz Drums from Hertz Instruments. Featuring lightning-fast beats that bring relentless ferocity to your metal compositions. This invaluable collection of drum grooves helps you take your metal music to next level. Add this pack to your arsenal, and let your metal compositions roar with power and intensity. This expansion pack works with Hertz Drums 1.2.9 or later.