best study music mix

Alright, alright. My friend needs suggestions for music to listen to whilst studying. First off, it has to be instrumental, but chill. Jazz is good. Classical is a little pretentious. Ornette Coleman is a bit overbearing. Wes Montgomery is perfect. Django Reinhardt is pretty good, too, as long as no one's singing. Tristeza is good if you want something a little more modern. Basically, pick something you'd fall asleep to.