Drums, for example, could be supersonic (10)
I believe the answer is:
percussion
'drums' is the definition.
'could be supersonic' is the wordplay.
'could be' indicates an anagram.
'supersonic' with letters rearranged gives 'PERCUSSION'.
'for example' is the link.
(Other definitions for percussion that I've seen before include "Drums etc." , "Impact" , "kitchen" , "Section of orchestra" , "triangles etc" .)