The Harlowe Family, from Samuel Richardson’s Clarissa Joseph Highmore (1692-1780)

The picture has something of this: people, group, music, woman, wear, man, performance, costume, opera, dress, dancing, dancer, theater, furniture, theatre, room, outfit.
Perhaps it’s a painting of a group of people sitting and standing in front of a man in a brown suit and a woman in a blue dress and white dress.