The exterior of the Broadway house used for the choir's concert is the Belasco Theatre on 44th Street between Sixth and Seventh Avenues in New York City, but the interior bears no resemblance whatsoever to the inside of that playhouse. It is actually the Knight Theater in Charlotte, NC
Two of the executive producers for this film are married couple Jennifer Aspen (Julie) & David O'Donnell. Jennifer was on Party of Five (1994) with Scott Wolf (Greg). O'Donnell is a Hallmark vet with Christmas Under Wraps (2014) (Andy) and Home for Christmas Day (2017) which he and Jennifer also executive produced. Another executive producer was Kristin Chenoweth (Katherine).
Scott Wolf's late bride in the movie is his real life wife (you can see her in some pictures in his house. Supposedly, his son in the pictures is his real life eldest son too.)
Hallmark Hall of Fame movie. Hallmark Hall of Fame is television's longest-running and most award-winning series.