Extra light isn't necessary to tune an overdamped piano! I have tuned one by candlelight in a power cut! All you need is proficient use of the Papps Mute. As the Papps Mute is rigid plastic, you can use the closed tip of it like a plectrum, to drag across the trichords to identify the correct note and string to mute. Sometimes, depending on the scale design and the placing of the overdamper action rail at the top of the action, in the bichords you can place the BLUNT end of the Papps Mute between the notes, ABOVE the action. The stronger spring force at the handle end of the Papps Mute can be sufficent to damp a wound string even near its end. Regards, David.
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