More song identification madness!

What song is this from? It sounds like it would be from Hexen but it ain't. I've heard it in Scythe, AV, Doom2 Extreme, etc.

freewebs.com/bashe/unknown.mid]Here's the song.

It's scrambled, but you should be able to make out the background behind the out-of-sync instruments.

It's used in AV's map22, but I am not sure of the original source. If you have the textfile for AV, you can find out.

It just tells me "Other Sources."

It doesn't have a name.

Does at have an original game?

This one is also scrambled (you already knew that) but I still recognize it. Whatever it is, it's not an original piece.