Chords for Sirvan Khosravi, Mehdi Emaadi - Kheili Rooza Gozasht - DrumCover (سیروان خسروی - خیلی روزا گذشت) (). 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.