Crossword Genius

Manchester orchestra wants no echo where they may play (4)

Ross

I believe the answer is:

hall

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'manchester orchestra' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I don't understand how the rest of the clue works.

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(Other definitions for hall that I've seen before include "Vestibule, lobby" , "Building used for public assembly" , "See 21" , "Chamber" , "Large meeting room" .)

I've seen this clue in The Times.
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