Jredd had taken the track from Circuit Bird, and added stuff and cleaned up the mix a bit. He handed it over to Groovemaster 303 who also enhanced it. Since that song was already rocking so hard, I figured I HAD to lay down some mean guitar riffs. 
From Jredd's posting: "This is mostly a sped up tweaked out cover, but it also has a cameo from the first level of doom 2 hidden in it. See if you can spot it :D. Well I guess that's it :). I hope we have done this Bobby Prince classic justice. If not, I suppose Doom Guy will destroy us. So either way you'll get your carnage :P. It's really too bad the 32X port was rushed. Imagine what it could have been ;)."

Doom E1M1 Hangar - Reloaded (Circuit Bird, Jredd, Groovemaster 303 And Multi-Memory Controller)

A one-mind band fusing power / prog metal with unholy chiptunes, writing original music on classic video games. Welcome to the world of chipmetal.

listen on youtube instead: https://www.youtube.com/channel/UCVwWQ3yKIpWUT2P3zCv5LFQ