Music loop specialist Beta Monkey Music has released the follow-up to its popular Double Bass Mania drum loop collection. Double Bass Mania II: The Return of the Beast contains 800+ double bass grooves, groove variations, fills, one shots, and samples. The loop collection features a range of tempos from 75 BPM to 300 BPM, covering modern metal grooves in the vein of bands like Lamb of God, Shadows Fall and Children of Bodom. The collection also has old school beats for songs from bands like Slayer, Pantera, or early Metallica. Double Bass Mania II costs $29.99 and will ship on September 18.