There seems to be a problem today with linking so I'm unable to link you to the movie genre section of the Contribution Bible. Here is a quote of the relevant section:

The "Music" genre should only be used for concerts, music documentaries and any films in which music is a key plot element. The "musical" keyword should be used for musical films.

I've never seen this movie so is music a key plot element? Or is the movie a musical?

It's not listed as musical or music. But yes, it is a musical. It has some all-time songs. Like Dentist!: https://www.youtube.com/watch?v=YoWom0CCRKM

and Down On Skid Row: https://www.youtube.com/watch?v=z0kSBiu1IGk via the wonderful Crystal, Ronnette, and Chiffon.

Definitely check it out! It's an amazing movie!

If it's a musical, it should use the musical keyword (which it already does), not the music genre.

And thanks for the videos! Dentist! is pretty funny and Down On Skid Row is great. Definitely adding the movie to my watchlist.