Making a Steinway: the soundboard and bridge
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How do you make a piano? We go behind the scenes at Steinway to find out...

9. Making a Steinway: the soundboard and bridge
This is where the magic happens. So, according to Steinway's website, the soundboard "is a large wooden diaphragm with a wooden bridge centred on its top side. The piano strings pass over the bridge, and the bridge transfers the string energy into the soundboard. As a result, the sound of the strings is amplified." See? Magic.