Well, it's not really his new song but he's featured in it as the rapper.

The song is sung by Soo Ah from D-Day. It's a very nice song, mid-tempo, just the way I like it.

I really wished Injoon has sung instead of rap because he's such an amazing singer but it's okay, as long as he's doing something I'm happy.

Masters, we'll just have to wait for our boys to come back and make more music. Don't give up on them! >_<