Section of orchestra should refuse (5)
I believe the answer is:
Here is my best explanation:
'refuse' is the definition.
(I've seen this in other clues)
'section of orchestra should' is the subsidiary indication.
'section of' indicates a hidden word.
'trash' can be found hidden inside 'orchestra should'.
(Other definitions for trash that I've seen before include "bunk", "Garbage, refuse", "Garbage or nonsense", "Junk", "Worthless people; destroy (US slang)", "Worthless material to be disposed of", "Rubbish, refuse", "American refuse", "Anything of poor quality" and "Rubbish - destroy".)