RA Acoustic Isolation Instruments (Loops):

250 Grooves
199 Percussion Loops
32 Marching Drum Loops
24 E-Bass Loops
3 Combo Loops
39 E-Guitar Loops
16 Electric Piano Loops
4 Flute Loops
27 Acoustic Guitar Loops
9 Mouth Harp Loops
8 Picked Bass Loops
6 Gamelan Loops
29 Piano Loops
49 String Loops
4 Stylophone Loops
32 Synth Loops

(+50 Bonus Loops taken from RA Rock Essentials Mini Expansion)