 Then, about 1680, Mlle de Guise increased the size of the ensemble, until it included 13 performers and a singing teacher.In the pieces written from 1684 until late 1687, the names of the Guise musicians appear as marginalia in Charpentier's manuscripts – including "Charp" beside the haute-contre line.Étienne Loulié, the senior instrumentalist who played keyboard, recorder and viole, probably was entrusted with coaching the newer instrumentalists.