Around box, roar excited players (9)
I believe the answer is:
orchestra
'players' is the definition.
(group playing music)
'around box roar excited' is the wordplay.
'around' indicates putting letters inside.
'box' becomes 'chest' (chest is a kind of box).
'excited' is an anagram indicator.
'roar' with letters rearranged gives 'orra'.
'chest' placed within 'orra' is 'ORCHESTRA'.
(Other definitions for orchestra that I've seen before include "A number of musicians" , "Sort of stall" , "Instrumental group" , "Theatre area for musicians" , "Company of musicians" .)