2017 was a year of unexpected hits. "Bad and Boujee," (released in 2016 and on our best of '16 list, so ineligible for inclusion here) was the first track to hit number one from an unexpected corner, but it was followed up the charts by a pack of songs that both surprised and delighted. "Mask Off," "XO Tour Llif3," "Bodak Yellow"—none sounded like traditional pop songs, but proved that, while the world is losing its mind, music may be getting more exciting. Throw in some of the most ambitious work to date from artists like Kendrick and Jay, a full-on breakout year for Migos and SZA, and a collection of loosies that rival any album from Frank Ocean, and you have a year with an overabundance of great songs. These are the 50 best.