Ruined Streets

 is Track 9 on the Xenosaga THE ANIMATION Original Soundtrack. It plays in the following scenes:
 * The Red Testament and Wilhelm discuss KOS-MOS in Episode 3.
 * The Elsa rescues Ziggy and MOMO in Episode 4.
 * KOS-MOS awakens with the detection of the Zohar Emulator in Episode 4.
 * Lapis Roman places the Durandal under Galaxy Federation custody in Episode 7.
 * Togashi sends the PT cannon to the party in Episode 10.