Bloodwork is the first EP by American horror punk musician Wednesday 13. Bloodwork was meant to be preceded by one month by the studio album entitled Skeletons. The initial release of this EP was a complete accident, which involved the file uploading client used by the band. Late April 2008, "Someone" sent iTunes a file containing the Blookwork EP mp3s instead of the full-length Skeletons album (which was released on CD in North America on April 29.) Instead of having the tracks removed, Bloodwork remained fully downloadable, however Skeletons iTunes release was delayed until mid-May. The band struggled to come to a conclusion as to whether the EP would receive a CD release or if it would stay download only for the time being. On June 4th 2008, a decision was reached and was posted on the band's myspace blog
"The Bloodwork E.P., which is currently available for download on Itunes and Amazon, will be available for sale as a physical cd during the U.S. tour starting on July 1, 2008."
It is rumored that this EP will remain a tour only item, depending on sales.
The EP features six tracks, including two unreleased songs, a Tom Petty and the Heartbreakers cover, the 4th re-recording of a song by Wednesday 13's former band Frankenstein Drag Queens From Planet 13, and acoustic renditions of two songs from 13's Skeletons album, "My Demise" and "Skeletons".