![I am replacing the felt pads under my piano keys and found that under some of they old felt pads there were these paper discs. Does anyone know if I need to I am replacing the felt pads under my piano keys and found that under some of they old felt pads there were these paper discs. Does anyone know if I need to](https://i.redd.it/r3r5zrb626w41.jpg)
I am replacing the felt pads under my piano keys and found that under some of they old felt pads there were these paper discs. Does anyone know if I need to
![ARTS & ARCHITECTURE :: MUSIC :: KEYBOARD INSTRUMENTS :: UPRIGHT PIANO ACTION image - Visual Dictionary Online ARTS & ARCHITECTURE :: MUSIC :: KEYBOARD INSTRUMENTS :: UPRIGHT PIANO ACTION image - Visual Dictionary Online](http://www.visualdictionaryonline.com/images/arts-architecture/music/keyboard-instruments/upright-piano-action.jpg)
ARTS & ARCHITECTURE :: MUSIC :: KEYBOARD INSTRUMENTS :: UPRIGHT PIANO ACTION image - Visual Dictionary Online
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