Harp
Zither, Koto
Two kings are here right now! We need to entertain them otherwise who knows what they'll do. Get out the harp, or the zither, or something.
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こと
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You may already know that a Japanese harp is called a こと, but here's a mnemonic to help you if you don't:
When playing your harp, you always wear your coat (こと).