^ classical music can help, but its a bit distracting at times as i get into the music (LOL) or i tend to just ignore it, ambient beats is better personally as i can work to the beat a bit more, and it is more predictable, unlike the stories involved in classical music. and yep to matt's reasonings, it also interfers with the transfer to short-term memory as we have pay attention to something to transfer it there, and since we can only think about (in working/short-term memory) 5-9 pieces of information, if we have lyrics or beats they could be part of those pieces and so our memory decreases, and ability to learn decreases in the long run as less is transferred along each 'journey' sensory-->short-term-->long-term.