Portrait of Alexander Vostokov (?) Orest Adamovich Kiprensky (1782-1836)

The picture has something of this: portrait, people, wear, man, musician, music, retro, writer, facial expression, jacket, outerwear, jewelry, scientist, movie, outfit, administration.
Perhaps it’s a painting of a man sitting in a chair with his hand on the arm of another man’s shoulder and a cane in his other hand.