Summary: Dance music - (1) Sean Finn, (2) Cash Cash, (3) Iggy Azalea f. Charli XCX, (4) Katy Perry, (5) David Guetta, (6) Duck Sauce, (7) John Legend, (8) Pharrell Williams, (9) Henrik B., (10) Frankie Knuckles, (11) Aretha Franklin, (12) Nathan East...