Chords for BAEKHYUN 백현 '두근거려 (Beautiful)' (From Drama 'EXO NEXT DOOR') MV (). 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|BAEKHYUN 백현 '두근거려 (Beautiful)' (From Drama 'EXO NEXT DOOR') MV