If you want a subject for a musical in south Wales guaranteed to connect with local audiences, 1930s boxer Tommy Farr is your man. This famous boxer's life is the classic rags-to-riches-and-back-to-rags tale. He never lost his belief that hope and promise can overcome the bleakest reality: a potent mix in an area historically scarred by economic decline and political neglect.
So it is a pity that this musical, written by Mal Pope and staged by Michael Bogdanov's Wales Theatre Company, squanders much of the dramatic potential. Mike Doyle (Farr), a popular local comedian and singer, is 20 years too old to play the Farr who squares up to Joe Louis. Plus, he struggles with the acting part of the role. This hampers the longer first half, though Doyle improves in the second, where the songs are stronger.
Sean Crowley's fluid set - a half-boxing ring - works well. Performances from Llinos Daniel as Monty, and especially Peter Karrie as Farr's mentor, Joby Churchill, are classy touches in an uneven production.
· At the Sherman Theatre, Cardiff, from May 8-12. Box office: 029-2064 6900. Then touring.