Short piano piece one picks up with one’s partner (9)

I believe the answer is:

chopstick

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But I can't explain it at all! Could you help me understand?

(Other definitions for chopstick that I've seen before include "Eastern eating utensil" , "In the plural, they're oriental cutlery" , "Oriental eating utensil" , "member of consumer association" .)

I've seen this clue in The Times.

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