The Senators of Florence Swearing Allegiance to the Grand Duke of Tuscany Justus Sustermans (1597-1681)

The picture has something of this: people, group, woman, music, performance, wear, man, veil, many, child, dancing, recreation, dancer, costume, theater, portrait.
Perhaps it’s a painting of a group of people standing and sitting in front of a man laying on the ground in front.