Summary: Dance music - (1) Empire of the Sun, (2) Mary Lambert, (3) Pharrell Williams, (4) Paramore, (5) Jason DeRulo, (6) The 1975, (7) Katy Perry, (8) Britney Spears, (9) Cash Cash, (10) Naughty Boy f. Sam Smith, (11) The Chainsmokers, (12) Cazzette...