Chamber group, maybe (4)
I believe the answer is:
trio
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">chamber group maybe</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for trio that I've seen before include "Three together" , "(Composition for) three performers" , "Group of three (musicians)" , "Musical group" , "father, spirit and son" .)