Chords for David Gilmour - One of The Greatest Guitar Solos - Comfortably Numb 2nd Solo - Live in New York (). 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|David Gilmour - One of The Greatest Guitar Solos - Comfortably Numb 2nd Solo - Live in New York