Moonlit Piano Chase Trap

Full Prompt

A moonlit piano chase where the mouse
turns the whole instrument into a trap.

What happens The mouse runs across piano keys, making playful notes. 

The cat stalks across the piano lid. The cat lunges, but the mouse slips into the piano. 

The cat gets nearly caught by the closing lid. Inside the piano, the mouse runs through strings and hammers. The cat’s tail gets plucked like an instrument. 

The cat crashes into the keyboard section, causing a chaotic musical explosion. Final gag: the mouse presses one neat final note while the cat pops out wearing sheet music on its head.