JTBC is premiering a new Friday-Saturday drama “Chief of Staff” (also known as “Advisor”) tonight. The drama will revolve around political aides, a profession that hasn’t been the center of previous storylines, starring Lee Jung Jae, Shin Min Ah, Lee Elijah, and ZE:A’s Kim Dong Jun.

The highly anticipated drama also features music from nine other than EXO’s Chen as it was revealed he recorded a song for the series ending title. “Rainfall” talks about comfort always coming after hardships and the track is a soothing one with Chen’s vocals accompanied by a synth-string orchestra.

The OST dropped at 6PM KST on June 14, right on time with the drama’s debut.

Take a listen to the tack below.