Henry Edward Fox (1755-1811) Francois-Hubert Drouais (1727-1775)

The picture has something of this: portrait, people, woman, wear, girl, music, retro, oval, picture frame, dress, museum, vintage, model, veil, fashion, two.
Perhaps it’s a portrait of a young boy in a brown coat and white shirt, with his arms crossed, in a gold frame, against a black background.