What movies start with a song?

Here are some movies that start with a song:

- La La Land (2016)

- The Greatest Showman (2017)

- Moulin Rouge! (2001)

- Mamma Mia! (2008)

- Pitch Perfect (2012)

- School of Rock (2003)

- The Sound of Music (1965)

- West Side Story (1961)

- Singin' in the Rain (1952)

- The Wizard of Oz (1939)