Yo. The Piece of Cake mixtape is free. All 13 instrumental songs. Download 'em while they're hot (or, at the very least, lukewarm): Piece of Cake ZIP (53 MB)
You can also check out each track from Piece of Cake individually, plus learn a little bit about the creation of the songs:
If ya dig this, then you might dig my album full of originals -- Brilliant Shower.