Ключевые слова: antique, background, bass, beethoven, brown, choir, classical, clef, compose, composer, composition, concert, crotchet, flat, focus, gray, grey, harmony, instrument, jazz, key, letter, line, melody, minim, mozart, music, musical, musician, note, old, orchestra, paper, performance, quaver, rest, scale, semicrochet, sepia, sharp, sheet, sound, stave, striped, symbol, symphony, theatrical, treble, vintage,