Listen to JYP and Wonder Girls Heartbeat

Back in October, JYP started work on 2PM's comeback by producing some tracks in the studio. Recently he uploaded a video of himself and the Wonder Girls having some fun while he was working.

In the video you can see JYP in the background working on Heartbeat by singing the track out loud. While he does this, the Wonder Girls, more specifically Yubin starts dancing, lip syncing, and making movements to his singing.

It's pretty funny and it's good seeing the girls have some fun at his expense.