Портрет князя Г.Г. Орлова. 1768 Carl-Ludwig Christinek (1730-1794)

The picture has something of this: people, portrait, wear, neckwear, jacket, outerwear, scarf, menswear, music, man, musician, lid, retro, vest, singer, facial expression, outfit.
Perhaps it’s a portrait of a man in a red coat with a blue sash around his neck and a medal in his left hand.