Cantata No.156 - Sinfonia Johann Sebastian Bach Download 'Cantata No.156 - Sinfonia' on iTunes
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How do you make a piano? We go behind the scenes at Steinway to find out...
How do the strings get into the piano? A stringer guides each wire through a hole in the tuning pins and then uses a machine to turn the pin three times, wrapping the wire around it. The stringer than puts the pin into one of the holes in the iron plate.