The answer to the riddle is a piano. A piano has many keys, which are the black and white keys used to produce music, but it cannot open any doors as they serve a different purpose entirely. This play on words highlights the difference between literal and figurative meanings of "keys."
Piano
donkey and monkey
Open the keys with the door.
a piano
A piano has many keys but cannot open a single door. Each key produces a different musical note, showcasing the instrument's ability to create music instead of unlocking physical barriers. This riddle highlights the playful nature of language and the various meanings words can have.
A piano.
a piano
Keyboard
A Piano
Mon-keys Don-keys Piano keys
A piano.
A piano.