Two of K-Pop's hottest idols have come together for a new OST song!

On December 23 KST, MONSTA X's Jooheon and Lovelyz's Kei revealed the single "Ride Or Die," a track appearing on the OST for the JTBC drama 'Run On.'

"Ride Or Die" is a rap ballad where Jooheon raps the verses and Kei provides vocals, enhanced by the use of guitar and orchestral accompaniment. The song convey a romantic message of longing, with lyrics sending the message: "I will always be waiting for you in the same place."

Meanwhile, 'Run On' tells the story of Gi Sun Gyum (played by Siwan), a former sprinter working to become a sports agency, and a subtitle translator Oh Mi Joo (Shin Se Kyung). The drama premiered on December 16.

Check out the music video for "Ride Or Die" above!