Opera and recitative were invented because

In the old days, when musicians got together to play, they used whatever instruments were around. If there were three lute players, a harp, and two flutes, then that's what they used. By the 1500s, the time known as the Renaissance, the word "consort" was used to mean a group of instrumentalists, and sometimes singers too, making music together or "in concert".

Dont really know what the answer is