And DuBarry Was a Lady (1943) isn't one of them.
The dialogue and plot are almost as diabolical as the musical numbers. The only points in its favour are its stellar cast (Gene Kelly, Lucille Ball, Red Skelton and Zero Mostell as Rami the Swami), its glorious technicolor, and its inspired costume and set design. This is most certainly one that should be watched sans sound.
Virginia O'Brien as Ginny in her Salome number. The only number with any oomph.