In 2018, Korean artists pushed the boundaries of what K-pop can do on the world stage. BTS led the charge, sweeping awards, chart victories and records at a constant rate.

Outside of record-breaking victories, 2018 was full of boundary-pushing releases from across the board. Elements of disparate genres -- ranging from jazz to arena rock to ‘80s synth-pop -- snuck their way into our top songs list. While K-pop has always been sonically amorphous, we saw plenty of Korean acts expand their sound while achieving commercial success.

We tend to stick with singles on year-end lists at Billboard, unless there’s a standout deeper cut that we like more -- though we decided to allow two BTS entries on the list this year because, frankly, it was hard to choose between our two nominated songs. This top 20 list is a compilation of the greatest K-pop songs from a year marked by loss, new beginnings and stratospheric accomplishments. 

20. Seventeen, "Oh My!" (You Make My Day)