I'd just like to say that I think this concept is fantastic! I've been a pianist for 23 years and I am also profoundly deaf. Some of the complicated polyrhythms I've encountered have led to much hand-wringing and hair-pulling (such as 5:3, 7:8, 6:8, etc). This VISUAL approach makes it SO easy to see the rhythmic interplay and to clap it until it becomes internalized. Thank you!