2013

Macklemore and Ryan Lewis proved independent artists could dominate Billboard without a major label, scoring two top-five hits including the year's #1. Baauer's 'Harlem Shake' became the first track to reach #1 primarily through YouTube meme virality, permanently changing how charts measured consumption. Robin Thicke's controversial 'Blurred Lines' and Imagine Dragons' rock crossover 'Radioactive' rounded out a year of genre-blurring hits.