Inside the Piano...

http://wengleemusic.wordpress.com/category/construction-grand-piano/

http://www.piano.christophersmit.com/playingMech.html

http://www.allegropianoworks.com/piano_amazing.htm

http://www.concertpitchpiano.com/GrandPianoConstruction.html




http://www.howitworksdaily.com/whats-inside/see-inside-a-grand-piano/