Eightsome (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">eightsome</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that eightsome can be written as octet)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for octet that I've seen before include "Played" , "Musical composition for eight performers" , "Lines of verse" , "Group of eight musicians" , "Mendelssohn wrote this" .)
(Other definitions for octad that I've seen before include "Crew, perhaps" , "Group" , "E.g. quarterfinalists" , "quarter-finalists, perhaps" .)