I'm not sure if this is old news, but I couldn't find in relation to this online so I thought I'd share it anyway. This evening I stumbled upon this classic tune from Bungie's "Myth" series which was once titled "The Siege of Madrigal", which then later appeared as an Easter Egg in the "Halo" series under a new title, "Spartan's Regret". Nice to see the tradition of this tune being carried on.