The Sanderson Sisters, e.g (4)
I believe the answer is:
trio
(Other definitions for trio that I've seen before include "Three of a kind" , "Piece for three players" , "A group or set of three" , "Group of three (musicians)" , "Work for three" .)
I believe the answer is:
trio
(Other definitions for trio that I've seen before include "Three of a kind" , "Piece for three players" , "A group or set of three" , "Group of three (musicians)" , "Work for three" .)