Chords for Bhari Duniya Mein Aakhir Dil Ko Samjhane Kahan Jayen | Mohammad Rafi | Do Badan Sogns | Manoj Kumar (). 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.