In halo one, there's a hidden song in AOTCR. If you get a banshee, and fly to the second layer above the pyramid and jump out. You hear a song from one of bungie's past games. If anyone has the song in MP3 format, I'd like it.

The track you are looking for is Seige Of Madrigal.

http://www.megaupload.com/?d=S25MPU5P

And there it is.

thank you :)