DJ Halfred presents Jay-Z & Metallica - Black On Black

This, like the Grey Album (by DJ Dangermouse) is the accapella version of Jay-Z's Black Album mixed with the instrumentals from another album (Metallica-s Black Album).

This is the shit.

Unforgiven Clarity
The Struggle Within to change
The Sandman's First Song

These are all great tracks.

If there are any other albums like that, post them here.