Trio + four (6)
I believe the answer is:
septet
(Other definitions for septet that I've seen before include "Group of seven performers or singers" , "Several players" , "Group of seven voices" , "Heptad" , "Odd number of players performing" .)
I believe the answer is:
septet
(Other definitions for septet that I've seen before include "Group of seven performers or singers" , "Several players" , "Group of seven voices" , "Heptad" , "Odd number of players performing" .)