Veranda held by top orchestra (5)
I believe the answer is:
porch
'veranda' is the definition.
(I've seen this in another clue)
'held by top orchestra' is the wordplay.
'held by' indicates a hidden word.
'PORCH' can be found hidden inside 'top orchestra'.
(Other definitions for porch that I've seen before include "Shelter over entrance" , "Veranda" , "Protection over a doorway" , "architectural feature" , "Roofed entrance to house" .)