William Weddell Pompeo Girolamo Batoni (1708-1787)

The picture has something of this: portrait, people, man, wear, model, outerwear, jacket, fashion, pants, music, lid, fashionable, facial hair, coat, son, musician, seat.
Perhaps it’s a painting of a man in a blue suit holding his hand out to the side of his body and wearing a red collared jacket and white shirt.