A Decade of No 1s (Kesha vs. Katy Perry vs. Adele vs. LMFAO vs. Carly Rae Jepsen vs. Gotye vs. Robin Thicke vs. Miley Cyrus vs. Iggy Azelea vs. Charli XCX vs. Charlie Puth vs. Mark Ronson vs. Bruno Mars vs. Ed Sheeran vs. The Chainsmokers vs. Camila Cabello vs. Maroon 5 vs. Lil Nas X ft. Billy Rae Cyrus vs. Ariana Grande vs. Doja Cat ft. Nicki Minaj)