I listen to music in my sewing room usually something upbeat, sometimes country, sometimes rock, sometimes CD's, and i get more done, In the quilting room I have found that good music with a good ... flow ... to it really helps my quilting be smoother, it flows with the music.:)
smooth jazz, lots of instrumentals are good to quilt to with the long arm, it has to be something you really like though because you have to have it up loud to hear it over the machine ;)