DrFortyseven’s review published on Letterboxd:
A surprisingly good twist on the otherwise tired Christmas Carol concept.
Also, put this into your calculus: going into it, I didn't know it was a musical.
Yet I enjoyed it quite a bit, and saw it through right to the end.
Only real criticism? It's a bit long, and if the footage/song in the credits is any indication, a whole bunch was probably cut already.
Good problem to have, though, in this instance.