Anselm Feuerbach (1829 – 1880) – Memory about Tivoli Alte und Neue Nationalgalerie (Berlin)

The picture has something of this: woman, people, girl, music, portrait, wear, rock, two, nude, man, outdoors, recreation, fashion, model, love, guitar, dress.
Perhaps it’s a painting of a woman holding a guitar next to a man sitting on a rock with a waterfall in the background and a bird in the foreground.