Originally Posted by Hermes

I climbed Mount Ventoux a few years ago and a couple who rode up on a tandem had a boom box on the back. There were excellent cyclists and cleaned my clock on the climb but I am not so sure that boom box added much more than weight.

Another idea for you that is pretty cheap, I know you will like that, is a water bottle filled with lead shot to use on hills for training. It does not make any sound but may improve your climbing.