1. Modest Mouse's "Float On" by Temple University's Broad Street Line
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2. Grizzly Bear's "Two Weeks" by Trevor Day School's a cappella group
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3. Gorillaz's "Feel Good Inc." by The Harvard Lowkeys
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4. Animal Collective's "Leaf House" by Momo and the Coop
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This one is a bold choice, but stick around for when the part where they all get weird and start saying "kitties! kitties!" because it is pure gold.
5. Death Cab for Cutie's "I Will Follow You Into the Dark" by the University of Richmond's Choeur du Roi
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6. Vampire Weekend's "Mansard Roof," "Oxford Comma," "Cape Cod Kwassa Kwassa," and "I Think Ur A Contra" by Columbia University's Nonsequitur
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Columbia happens to be the alma matter of all four members of Vampire Weekend.
7. Passion Pit's "Little Secrets" by Wesleyan University's The New Group
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8. Florence and the Machine's "Spectrum" by Intentional Accidentals
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The bit where they throw in a little bit of Destiny's Child's "Say My Name" is very inspired, in a very Pitch Perfect sort of way.
9. The New Pornographers' "The Bleeding Heart Show" by The Compulsive Lyres
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10. Fleet Foxes' "White Winter Hymnal" by McGill University's Effusion
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Fleet Foxes was basically a gift from above to a cappella groups everywhere.
11. Tune-Yards' "Bizness" by UPenn's Dischord
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...and so was Tune-Yards, really.