Chords for 田馥甄 Hebe Tien [ 愛了很久的朋友 ] Official Music Video (電影『後來的我們』插曲) (). 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.