What actors and actresses appeared in The Pennywhistle Blues - 1951?

There seems to be a misunderstanding. There is no film or movie known as "The Pennywhistle Blues - 1951." It's possible that:

* The title is incorrect: Perhaps there's a slight error in the title, and it's a different movie.

* The year is incorrect: The movie might have been released in a different year.

* The movie is obscure: It's possible that the movie is a very rare or unknown film.

Could you please double-check the information you have? If you can provide more details, such as the genre or any other keywords related to the film, I might be able to help you find it.