Beta Monkey Music has announced that the fourth installment in its Double Bass Mania Series is now shipping - Double Bass Mania IV: Groove Metal.
Double Bass Mania IV: Groove Metal is a two-CD set of 1100+ "hard-driving, earth-shattering metal grooves", all focused in the 90-120 BPM tempo range. If you already own DBM III, then this is the logical addition - giving you all the complementary tempos for breakdowns. If you passed on DBM III because the speeds were too much, then this is the collection for double bass heaviness that grooves.
This new collection of metal grooves is suitable for anyone needing heavy grooves in the vein of Pantera, Lamb of God, and Machine Head (among others), according to BMM.
Price is $44.44 (with free shipping until Friday October 9, 2009). Downloads are available - get the grooves immediately after purchase. Formats include WAV and Apple Loops.