Alright. So when I'm doing work I go through periods of what I can listen to, what I can't listen to, etc. Lately, I've been best able to concentrate through instrumentals, but classical isn't working for me probably because my classical selection is kind of lame and I don't really know what else to acquire. Anyway, for some reason I have Miles Davis' Kind of Blue on my computer and I found that worked for me. So any jazz recommendations? Or, for that matter, other classical suggestions?