Study Music?

With finals approaching and these study days, I've been trying to find good study music. It needs to be something to keep me from going completely insane while studying, but it can't be too distracting either.

I recently rediscovered Coldplay's album Live 2012 which I've been listening to for a while, but sometimes the background noise from the crowd can get distracting.  I've found that the best study music for me has little or no words, or the words are quiet, more in the background, with strong acoustics.

On the more classical side, anything by the Vitamin String Quartet will be good, as long as you can refrain from singing the lyrics yourself.  Ben Howard is great, as well as just about all folk rock music.

My current Study Playlist:
"The Funeral" - Band of Horses
"Siren Song" - Bat for Lashes
"The Rip Tide" - Beirut
"The Wolves" - Ben Howard
"Old Pine" - Ben Howard
"Dirty Paws" - Of Monsters and Men
"Artificial Nocturne" - Metric
" The Scientist" - Coldplay
"Fix You" - Coldplay
"Sail (String Quartet Tribute to AWOLNATION)" - Vitamin String Quartet
"Little Talks - String Quartet Tribute to Of Monsters and Men" - Vitamin String Quartet
"Gun-Shy" - Grizzly Bear
"1901" - Birdy
"Dark Undercoat" - Emily Jane White
"Skinny Love" - Bon Iver
"Perth" - Bon Iver
"Such Great Heights" - Iron & Wine
"Flightless Bird, American Mouth" - Iron & Wine

Comment with your favorite study songs!