the window. Portrait of O. Trubnikov. 1885 Valentin Serov (1865-1911)

The picture has something of this: people, portrait, man, wear, music, retro, leader, woman, jacket, musician, scientist, writer, sit, facial expression.
Perhaps it’s a painting of a man sitting in a chair with his hand on his head and his right hand resting his head on his left side of the chair.