Achilles Receiving in his Tent the Envoys of Agamemnon Jean Auguste Dominique Ingres (1780-1867)

The picture has something of this: people, group, Renaissance, mammal, man, cavalry, veil, woman, furniture, position, herder, royalty, two, seat.
Perhaps it’s a painting of a group of men and women standing in front of a man with a guitar and another.