Ключевые слова: abstract, art, artist, box, chord, classical, classical piano music, compose, composition, concept, copper, damper, entertainment, fashioned, forte, grand piano, grunge piano, hammer, history, hit, inner, inside, keyboards, keys, learning, lines, mechanics, melodious, motion, music metaphor, objects, operation, panino, part, percussive, performance, pins, play, rims, scale, screws, set up, string, style, technique, tool, tuneful, upright, vintage, wooden,