Did you know that there are a number of ballet, opera, and musicals in period films?
L-R: Red Shoes; Io, Don Giovanni; My Fair Lady; Moulin Rouge; Phantom of the Opera; Les Miserables
Ballet
- Ballet Shoes (2007) – 1920’s
- Margot (2009) – 1960’s
- Matilda (2017) – Victorian
- The Nutcracker and the Four Realms (2018) – Victorian
- The Red Shoes (1948) – 1940’s
Opera
- La Boheme (2008) – Victorian
- Io, Don Giovanni (2010) – Rococo
- Der Freischütz (2010) – Regency
Musicals
- Annie (1982) – 1930’s
- Bedknobs and Broomsticks (1971) – WWII
- Chicago (2002) – 1920’s
- Hallmark’s A Christmas Carol: The Musical (2004) – Victorian
- Evita (1996) – 1940’s
- Hello, Dolly! (1964) – Victorian
- My Fair Lady (1964) – Edwardian
- Mary Poppins (1964) – Edwardian
- Mary Poppins Returns (2019) – 1930’s
- Les Miserables (2012) – Victorian
- Moulin Rouge! (2001) – Victorian
- The Phantom of the Opera (2004) – Victorian
- The Sound of Music (1965) – 1930’s
- Sweeney Todd (2007) – Victorian
- West Side Story (1961) – 1950’s
The Lady and the Rose 
I believe Sound of Music was 1930s as it revolved around the Anschluss of 1938.
Unless you mistook it for Bedknobs & Broomsticks which was 1940s
Ah good point and you are right. I thought it was 1940’s because of WWII.
Here’s a few others
Fiddler on the Roof (Edwardian/Czarist Russia)
Chitty Chitty Bang Bang (Edwardian)
Funny Girl (1920s)
Beauty & the Beast 2017 (18th Century)
The Greatest Showman (19th Century)
Cabaret (1930s)
Scrooge (Victorian)
Aladdin 2019 (Ancient Middle East)
Mamma Mia: Here We Go Again! (1970s/present)
Grease (1950s)
Moulin Rouge! (1900s)