Chords for Aww Tera Happy Bday|ABCD 2 |Varun Dhawan Shraddha Kapoor |Sachin - Jigar |D.Soldierz | Birthday song (). 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.