Rings head of theatre as well as players here (9)
I believe the answer is:
bandstand
'players here' is the definition.
(where musicians might play)
'rings head of theatre as well' is the wordplay.
'rings' becomes 'bands' ('band' can be a synonym of 'ring').
'head of' suggests taking the first letters.
'as well' becomes 'and' (I've seen this in other clues).
The first letter of 'theatre' is 't'.
'bands'+'t'+'and'='BANDSTAND'
'as' acts as a link.
(Other definitions for bandstand that I've seen before include "Outdoor concert stage" , "Outdoor music platform" , "place to play?" , "Park structure for musicians" , "park feature?" .)