I can also agree with irishsnout. It is about changing my state of mind. All through my university years ( now finally in my final semester!!!), I've tuned in to my favourite music station (currently Smooth Jazz 24/7) while studying. It makes it a far more enjoyable experience and I actually look forward to closing the door to my study, turning on the music at low volume and getting my teeth into the study material, because I can listen to some very nice music undisturbed :)

It's a fantastically addictive mood altering drug with only positive side effects :D