Chords for Accept - Metal Heart @Arcada Theatre - St Charles, IL - 9/29/2017 (). 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|Accept - Metal Heart @Arcada Theatre - St Charles, IL - 9/29/2017