наоми фортепиано тюнинг инструмент приглушения чувствовал инструмент подавления красной шерстяной войлок темперамент полосы

made of felt, this mute strip for piano chromatic tuning is so soft that it won't bring any damage to piano strings. but what should be kept in mind is to step on the damper pedal when you wind this mute strip around strings so that the damage caused by string displacement can be avoided.