Portrait of the Rt. Hon. Thomas Grenville, M.P., half-length in a grey coat and a white cravat... John Hoppner (1758-1810)

The picture has something of this: people, portrait, man, outerwear, wear, jacket, musician, music, writer, facial expression, woman, retro, coat, elderly, theater, singer.
Perhaps it’s a painting of a man with white hair wearing a black coat and a white collared shirt, with a red wall behind him and a red background.