Caught off guard by the soundtrack in 'Nightmare Alley'—any other movies with unexpected musical vibes?

I just finished watching 'Nightmare Alley' last night, and honestly, the soundtrack threw me for a loop. I was expecting something dark and brooding, but instead, there were these jazzy, almost upbeat tunes that contrasted so much with the grim storyline. It made certain scenes feel surreal in a way I hadn't anticipated. I've tried looking up the composer and found out it's by Nathan Johnson, who’s known for mixing genres, but I can't decide if I loved or hated the effect.

Has anyone else experienced a movie where the soundtrack completely changed how you felt about the story? What other films have soundtracks that surprised you like this? Also, does anyone know if this kind of musical choice generally helps with storytelling, or can it sometimes just confuse the tone?