Large combo (5)
I believe the answer is:
octet
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large combo</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for octet that I've seen before include "What takes members up to eighth" , "Mendelssohn or Schubert piece" , "A number of musicians" , "Work for eight players" , "Group of eight players" .)