Chords for [그랩더기타] 블루 (Blue) - 빅뱅 (Big Bang) [Guitar/기타/강좌/통기타/배우기/주법/독학] (). 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.