An amazing "a cappella" version of the SLAYER classic "Angel Of Death", performed by the Japanese one-man project DOKAKA, has been posted online in MP3 format at this location (4.41 MB). Also available for download is DOKAKA's equally entertaining rendition of IRON MAIDEN's "The Trooper". Check it out here (3.52 MB).
For more information on DOKAKA, click here.
[UPDATE: Additional tracks by METALLICA ("Creeping Death"),BLACK SABBATH ("Electric Funeral"),IRON MAIDEN ("2 Minutes To Midnight"),and HELLOWEEN ("Eagle Fly Free") can be heard via DOKAKA's MP3.com web site at this location.]