Support orchestra section; it's needed to keep playing? (6,4)
I believe the answer is:
second wind
'keep playing?' is the definition.
The definition suggests a singular noun which matches the answer.
'support orchestra section it's' is the wordplay.
I cannot quite understand how this works, but
'support' could be 'second' (eg to second an idea is to support it) and 'second' is present in the answer.
'section' could be 'wind' (I have seen 'section of orchestra' mean 'wind' so perhaps 'section' could also mean 'wind') and 'wind' is present in the answer.
No letters remain.
This explanation may well be incorrect...
'needed to' is the link.
Can you help me to learn more?
(Other definitions for second wind that I've seen before include "Renewed energy in effort" , "playing perhaps but not from top brass" , "Renewed vigour" , "burst of renewed energy" , "Distance runners need to get it" .)