Some frequent piano tuning applications: From leading to bottom: a tuning lever, a felt mute, a rubber mute, a felt temperament strip (still left), and a Papps mute. Popular instruments for tuning pianos contain the tuning lever or "hammer", a variety of mutes, along with a tuning fork or electronic https://music54321.actoblog.com/31493220/5-simple-techniques-for-piano-repair