# 1 Girls Generation, "I Got a Boy"

Named by Pitchfork as "the most structurally variable mega-hit since 'Bohemian Rhapsody,'" this genre-bending pop track throws everything from drum 'n' bass to bubblegum pop along with soul-sister belting sections and playful raps. Somehow, it all works together. It's a prime example that even K-pop's most mainstream acts—the ninesome has topped Forbes Korea's Celebrity Top 40 list three times since 2010—are totally cutting-edge in their pop music.