A moving stair can sound musical! (5)

I believe the answer is:

sitar

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'can sound musical' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
I also know that 'musical' relates to this answer.

'a moving stair' is the wordplay.
'a moving' is an anagram indicator.
'stair' anagrammed gives 'SITAR'.

Can you help me to learn more?

(Other definitions for sitar that I've seen before include "music-maker" , "music producer" , "Long necked and often plucked" , "Indian musical instrument like long-necked lute" , "Indian stringed instrument" .)

I've seen this clue in the Evening Standard.

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