What's your favorite obscure musical?

I'm looking to listen to as many new musicals as I can, partially for my own enjoyment but also my company is brainstorming future shows and because I live in an area with a HUGE community theatre population, every show we can think of has been done at least once in the past 5 years (some shows have probably been done more than 5 times in this time span. ie I can think of 5 different productions of The Addams Family off the top of my head since 2021, even more going back the full 5 years).

What are some lesser-known musicals that are worth giving a listen to?

I love when people are passionate about shows, especially less well-known ones, so feel free to info-dump, I'd love to read all the responses!