Board Thread:Spoilers!/@comment-2153169-20170122203703/@comment-27150869-20170217185638

INFO ABOUT EPISODE: Aww, flattery will get you everywhere, Lisa. It will also get you this confirmation that Lana Parrilla will be among those belting a tune. After all, what would a musical Once episode be without a clash between the show’s original rivals — in the form of a grand (and royally entertaining) sing-off between the Evil Queen and the Charmings? Because I hear that is happening, folks.

http://tvline.com/2017/02/17/once-upon-a-time-musical-spoilers-regina-charmings-sing-off/