Pompeo Batoni 001 Pompeo Girolamo Batoni (1708-1787)

The picture has something of this: people, portrait, book bindings, music, wear, jacket, woman, vintage, man, model, seat, furniture, musician, retro, coat.
Perhaps it’s a painting of a man wearing a blue coat and holding a book in his right hand and writing on a piece of paper in his left hand.