Piano Concerto No.3 in D minor Opus 30 (3) Sergei Rachmaninov Download 'Piano Concerto No.3 in D minor Opus 30 (3)' on iTunes
This image appears in the gallery:
11 wonderfully creative ways to teach children music theory
Imagine dozens of these flying around the room. Get someone to call out the time signature and then try and find the balls to match (and throw any you don't need). Bonus - you get to throw ping pong balls around a room.