Command Performance
Starring Arthur Tracy, Lilli Palmer, Mark Daly, Finlay Currie, Jack Melford, Stafford Hilliard, Julian Vedey, Phyllis Stanley, Rae Collett, Peter Madden
It's a drama and music movie, and has a rating of 5.9 out of 10 from Imdb which is fairly okay for this kind of movie.
Watch it here
Not found streaming from Belgium.