I've put together a soundtrack for studying. Most of Newgrounds is 12+ and into metal, so more than likely this list will suck. But for those into easy-listening, yet adventurous music, not as loud but just as good, here's the good stuff.
Vampire Weekend -- "Campus"
Spoon -- "My Mathematical Mind"
Wilco -- "Impossible Germany"
The Decemberists -- "O Valencia!"
Stars -- "My Favourite Book"
Broken Social Scene -- "Cause=Time"
Sun Kil Moon -- "Neverending Math Equation"
Rogue Wave -- "Punish My Love"
The Mommyheads -- "Help Me"
Chad VanGaalen -- "Inside the Molecules"
Sloan -- "Listen to the Radio"
Bonnie "Prince" Billy -- "Love Comes to Me"
Fleet Foxes -- "Mykonos"
Spiritualized -- "Soul on Fire"
Arcade Fire -- "The Well and the Lighthouse"
Download these brainpower-boosting beats and let those mental muscles flex.
Tykwa
Any radio broadcast by Armin Van Buuren.
Get those mental powers flexing.