Prompt: masterpiece, best quality, RoonV4, 1girl, solo, looking at viewer, smile, hair ornament, thighhighs, dress, cleavage, bare shoulders, jewelry, sitting, indoors, medium hair, black footwear, black dress, high heels, bracelet, official alternate costume, halterneck, cross, halter dress, ((red feather boa:1.3)), piano, shoe dangle, sheet music, tight dress, grand piano, arms behind head