Ключевые слова: art, beat, classic, classical, clock, control, cycle, cyclic, design, device, education, element, equipment, flat, icons, instrument, lesson, mechanical, metrical, metronome, minute, motion, move, music, musical, object, old, pace, pendulum, piano, practice, pulse, retro, rhythm, scale, set, slow, sound, speed, swing, swinging, synchronicity, tempo, tick, time, timer, vintage, white, wooden,