Ключевые слова: accuracy, allegro, art, background, balance, beat, black, clock, compose, disk, equipment, inspiration, instrument, learning, measure, melody, metronome, motion, move, music, musical, musician, object, old, pendulum, play, regulate, regulator, rhythm, rythm, score, slow, sound, speed, study, tempo, time, timer, timing, tool, watch, wood, wooden,