2PM has released their dance practice for "Promise (I'll Be)"!
The boys filmed their dance practice not in a dance studio, but what looks like a theater. The empty seats and the dark lighting add to the mood of the entire performance. Of course, as usual 2PM there is a bit of shenanigans as Taecyeon can't stop smiling in the beginning of his part, but there's barely any as they keep the mood serious as much as they can.
Check out the video above!