Siege of Madrigal

In the Halo: Combat Evolved level Assault on the Control Room, there are a couple places where you can stand and hear a song from Myth, another Bungie game, called the Siege of Madrigal. One can be found on the pyramid structure at the end of the level. There are three brackets on the large tower, get a Banshee and land on the second one. Facing the cliff, go to the right side of the bracket and wait a few seconds. If you can't hear it, walk around a bit to find the right place.

The other one can be found in the beginning of the level. You could ride on a Pelican, but you would most likely die. The best way to get to there is by grabbing a banshee, then returning to the start. It would be easier if you have another Spartan playing with you.

The Siege of Madrigal is also featured after the last track on the Halo Soundtrack CD.

You can also hear it in ivory tower in Halo 2. If you stand near the silver door, near the elevators, for long enough it will play. It plays Siege of Madrigal or other sounds.