For bulletin boards you could tailor it to a specific song or if they have a really well know tour. Door tags you could have fun with that it could be different images of the artist.

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You could make the rest of the floor just music themed, maybe make a music staff and put the start of your school song on it

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I’d personally do different eras of Taylor swift (if doing the same artist) or pick a combo of two that are not very similar (like Gracie / Charli XCX) and do alt album covers as decs

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