On September 7th, singer Brian Joo revealed his OST contribution track for SBS's popular drama, 'Protect the Boss'! Titled "I Can't Go", the ballad expresses a lover's painful lament over how he can't move on from this one love. Brian's emotional delivery adds a richness to the overall track, and a depth to heartbreaking scenes in the drama. Be sure to take a listen below, and support Brian by purchasing his music from here, here, or here. Many thanks to Lisa Tang for sending the tip in!