Portrait of Alexander Petrovich Dubovitsky Vladimir Borovikovsky (1757-1825)

The picture has something of this: portrait, people, man, jacket, wear, coat, music, musician, model, outerwear, singer, fashion, dark, light, mustache, brunette, facial expression, face.
Perhaps it’s a painting of a man in a black coat and white shirt holding a pair of scissors in one hand and pointing at something in the other hand.