Portrait of Alexander Olsufiev Nikolay Ge (1831-1894)

The picture has something of this: portrait, facial hair, people, mustache, man, wear, jacket, music, musician, beard, uniform, soldier, lid, elderly, leader, outerwear.
Perhaps it’s a painting of a man with a long beard wearing a black coat and gold trimmings, standing in front of a brown background with his right hand.