Dennys Art Sanctuary: Coolest Guitar Duet: Four Hand Exchange: From Denny: This is the best guitar video I've seen in a long time. It's from the Brazilian Music Institute. As the performance opens it sure looks funny as the man puts his hands over the shoulder of the woman holding the guitar. Then you see four hands playing at once - and the music is as wonderful as the image is funny! Makes you wonder how long it took to practice the piece and not get all tangled up doing it.