Egil's Theme

Egil's Theme (originally unofficially referred to as Aegir) is Disc 2, Track 1 on the Xenoblade Original Soundtrack. It plays during these cutscenes:
 * When Alvis reports to Sorean and Kallian about Melia and Shulk after they arrive in Alcamoth
 * When Yaldabaoth is shown for the first time after Shulk's audience with Sorean
 * When the party is looking for Sorean in the, but only finds Kallian after he has already departed for Prison Island
 * After the battle with the Skyray on Central Seal Island
 * After Shulk's vision at the Prison Gate on Prison Island
 * When Alvis visits Zanza on the Prison Terrace on Prison Island
 * After Shulk's vision at the Heavy Machine Depot in Sword Valley
 * When Kallian is being informed about the destruction of Galahad Fortress
 * When Shulk and Fiora are being attacked by Mechon in Ulna Passage on the Fallen Arm
 * When Egil erases Gadolt's memories
 * When Alvis warns Kallian about the awakening of the Mechonis
 * When the party arrives at the