Ключевые слова: antique, baby, concert, copper, dampers, dirty, europe, european, frequency, grand, grand piano, grunge, harmonics, harmony, history, inside, inside piano, instrument, instruments, interior, melody, music, musician, old, orchestra, percussion, piano, piano interior, piano strings, precision, rusty, serial number, strength, strings, symphonic, symphony, tensile, tension, tune, tunes, tuning, vintage, wire,