Entrance of some members of top orchestra (5)

I believe the answer is:

porch

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'entrance of some members' is the definition.
'porch' can be an answer for 'entrance' (I've seen this before). I am not certain of the 'of some members' bit.

'of top orchestra' is the wordplay.
'of' indicates the answer is hidden within the clue.
'PORCH' can be found hidden inside 'top orchestra'.

Can you help me to learn more?

(Other definitions for porch that I've seen before include "Protection over a doorway" , "Veranda" , "architectural feature" , "Covered entrance to a building" , "Roofed entrance to house" .)

I've seen this clue in The Times.

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