Chords for 『Lover Come Back To Me』 ユッコ・ミラー×川口千里(Senri Kawaguchi)×岩永真奈×長崎祥子 (). 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.