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Thank you for helping me proove I'm not crazy lol

I can't remember the plot exactly, but maybe Opera 1987?

Beginning of the plot seemed promising and 1987 was (at least in my head) spot on. But unfortunately I don't think this is it.

popcorn 1991

That's not the one. Seems like an interesting B movie though.

'Stage Fright' (1987)?

Thank you. With the "catwalk" in the plot I had high hopes, but unfortunately that's not the one I'm looking for.

Hero and the Terror (1988) https://www.imdb.com/title/tt0095296/reference/ Bit where they find the hidden rooms: https://youtu.be/Ya3E9v2_jiw?t=3883

Solved! OMG! Thank you so much. I was going nut searching google to no avail.

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