Their musical version of "Rocky the Musical" premiered in Hamburg, Germany in October 2012. The show is based on the film "Rocky" and has a book by Thomas Meehan. "Rocky the Musical" opened on Broadway at the Winter Garden Theatre on February 11, 2014 (previews), and officially opened on March 13, 2014. The musical is directed by Alex Timbers, with boxing choreography by Steven Hoggett and choreography by Kelly Devine. The former occupant of the Winter Garden Theatre, the musical "Mamma Mia!", transferred to the Broadhurst Theatre in November 2013. Andy Karl and Margo Seibert are featured as Rocky Balboa and Adrian.