Jang Bum Joon is the voice behind "After You Leave Me" for 'Yoon Jong Shin's April Monthly Project'. 

In the music video, Jang Bum Joon strums the guitar with his band and with his special someone. "After You Leave Me" is about realizing your loneliness and feelings on a past relationship only after you leave it behind.

Watch Jang Bum Joon's "After You Leave Me" MV above, and let us know what you think in the comments below.