Javanese percussion (7)
I believe the answer is:
gamelan
'javanese percussion' is the definition.
'gamelan' can be an answer for 'percussion' (thesaurus). I also know that 'javanese' relates to this answer.
This is the entire clue.
(Other definitions for gamelan that I've seen before include "exotic orchestra" , "Indonesian orchestra" , "Asian players" , "Asian ensemble" , "Balinese orchestra" .)