Ключевые слова: acoustic, adjusting, antique, artistic, audio, background, chord, classic, classical, closeup, craftsman, design, detail, equipment, grand, hand, harmony, instrument, instrumental, ivory, key, keyboard, male, man, measurement, mechanical, music, musical, musician, old, pegs, piano, pitch, play, precision, ratchet, repair, sound, spanner, string, tool, torque, tune, tuner, tuning, upright, vintage, wood, work, wrench,