30. Azealia Banks, '1991'
Twenty-one-year-old Banks' debut EP was 2012's great appetite-whetter: a four-track-long amuse-bouche that left fans of the vaunted next-big-thing Harlem rapper panting for more. (A full-length LP is due early next year.) Banks packs an album's worth of fun into 15 minutes: dissing, boasting and talking very dirty in English and, uh, French ("Ce soir with your bitch, café au lait"); reclaiming the word "cunt"; touting her "Bambi style" and "Rapunzel style," all over beats that are as feisty, and as irrepressible, as the woman herself.