Chords for Maari 2 - Rowdy Baby (Video Song) | Dhanush, Sai Pallavi | Yuvan Shankar Raja | Balaji Mohan (). 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.