Half a sextet is a musical term referring to a group of THREE musicians. It is made up of two parts: half and sextet. Half is a numerical term meaning one-half of a whole, while sextet is a musical term for a group of six musicians. Therefore, Half a Sextet is a group of THREE musicians, which is one-half of the size of a sextet. The crossword solutions for Half a Sextet are THREE (5 letters) and TRIO (4 letters).