Playing arena, band's Indian accompaniment (4,5)
I believe the answer is:
naan bread
'indian accompaniment' is the definition.
(accompaniment to an Indian meal)
'playing arena band's' is the wordplay.
'playing' indicates an anagram.
'arena'+'band'='arenaband'
'arenaband' with letters rearranged gives 'NAAN BREAD'.
(Other definitions for naan bread that I've seen before include "Indian staple?" , "Teardrop-shaped accompaniment to an Indian dish" , "Indian food item" .)