This wad contains no new levels, no graphics, not even sound effects. It contains only MUSIC. It replaces *all* Doom2 music tracks with Metallica songs in Midi format! There are about 30 different songs, some of them duplicated in two different arrangements. From The Four Horsemen to Until It Sleeps, including all the major hits such as Master of Puppets, Sanitarium, One, Enter Sandman and so on, and also unusual pieces such as Anaesthesia (from Kill 'em All) and the cover song Am I Evil?, and even Call of Ktulu in two different versions. I have collected the songs from the net, and there would have been even much more but I had to reject some because the arrangements were so weird that they were not actually even recognizable. Some of the arrangements used contain inaccuracies in transcription (Fade to Black and Harvester of Sorrow could be found in several versions in the net, but none of them were perfectly accurate). Justice had to be rejected because for some reason midi2mus could not handle it!