Inspired piece of music (3)
I believe the answer is:
air
This might be a double definition.
'inspired piece' is the first definition.
'air' can be an answer for 'piece' (I have seen 'piece of music' mean 'air' so perhaps 'piece' could also mean 'air'). I'm not certain of the 'inspired' bit.
'music' is the second definition.
(air is a kind of music)
'of' acts as a link.
Can you help me to learn more?
(Other definitions for air that I've seen before include "Cause of inflation" , "Lay" , "Publish" , "Bearing, manner" , "Light breeze" .)