Group of nine players (5)
I believe the answer is:
nonet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">group of nine players</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for nonet that I've seen before include "Composition for nine performers" , "Music for nine instruments or voices" , "Ennead" , "group composition" , "Piece for group" .)