The is the most essential construction kit for any producer. It covers all grounds (no pun intended) for popular electronic music. Sony's Loops For Acid producer Leo Cavallo is the contributor of this collection and it's a superb piece of work. Groundloops includes 760 ACIDized wav, 760 .rx2, 3 .sf2 soundfonts, a ACID demo starter song, and a free VSTi soundfont player.

Groundloops Consists Of: 760 ACIDized .wav and 760 .rx2
145 (128 MB) Bass and Synth Basses, 160 (150 MB) Keys & Synths, 50 (50 MB)Guitars, 170 (129 MB) Club Beats, 140 (134 MB) Breakbeats (From Hip Hop to EBM), 55 (35 MB) Construction Kit Style Drum Patterns & Percussion