Chords for Avenged Sevenfold - Carry On (featured in Call of Duty: Black Ops 2) [Official Music Video] (). Spark is the smartest and most interesting app to learn and enjoy playing guitar. Spark is an all-around app for beginners and advanced players to learn any song with chords or master new skills with hundreds of lessons and games in Spark.Spark Chords|Avenged Sevenfold - Carry On (featured in Call of Duty: Black Ops 2) [Official Music Video]