Siege of Madrigal is a song that Bungie used in one of their previous games, Myth. One can hear this song when standing in a certain spot in the games Halo: Combat Evolved, Halo 2, Halo 3, Halo 3: ODST, and Halo: Reach. This song is also featured at the end of Halo in the Halo: Original Soundtrack. A portion of this is included at the end of Installation 04 in the Halo: Combat Evolved Anniversary Original Soundtrack.