There was an interesting article in WSJ about listening to music at work and how much it can keep you focussed at the task in hand. The medical professor who is cited in the article is a Prof. from John hopkins. Here is an interesting introductory video about him and the research he is doing.
Medicine was an easier way out according to him than doing classical music. Here is playlist to chug along at work. .
Sathish Jayapal 