Piece for nine players (5)
I believe the answer is:
nonet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">piece for nine players</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for nonet that I've seen before include "baseball team" , "Composition for nine voices" , "Piece for nine musicians" , "Composition for nine instruments" , "piece to be performed" .)