Chords for 3 Easy Blues Licks for Acoustic Guitar | Steve Stine | Guitar Zoom (). 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.Spark Chords|3 Easy Blues Licks for Acoustic Guitar | Steve Stine | Guitar Zoom