(Music Downloads Not Rated by the ESRB) Build your Rock Band 3 library by purchasing this song game track pack: Killswitch Engage Pack 01. This pack includes "The Arms of Sorrow", "The End of Heartache", and "Starting Over" by Killswitch Engage. PLEASE NOTE: Rock Band 3 game disc is required to play song game tracks. This song game track pack includes 3 song game tracks at a discounted rate over individual purchases. Many Rock Band 3 songs are available as both a multipack and as a single game track. These songs are exactly the same. It is possible to download the same song twice. For song credits, visit www.RockBand.com. Compatible with Rock Band 3 and Rock Band Blitz.