What does it mean by 'show tunes'?
I wanted to shout at her that she was a selfish princess with too many clothes and no appreciation for show tunes, but my inner rage was even scarier.

What does it mean by 'show tunes' in above sentence?
Are they like famous musical numbers?

Question

What does it mean by 'show tunes'?
I wanted to shout at her that she was a selfish princess with too many clothes and no appreciation for show tunes, but my inner rage was even scarier.

What does it mean by 'show tunes' in above sentence?
Are they like famous musical numbers?

Answer

Yes, a "Show tune" is a song made famous by a musical. Many Broadway musicals have well-known songs.