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The clarinet was not introduced until sometime after the year 1700, and wasn't common until after 1750, so composers working before that did not use clarinets. J.S. Bach, for example didn't use clarinets in his orchestral works.
To determine the age of a Normandy clarinet with serial number 71947, you would typically need to refer to the manufacturer's serial number chart, as Normandy clarinets were produced in various years. Generally, Normandy clarinets were made in the mid-20th century, so it's likely that this clarinet dates back to the 1950s or 1960s. Checking with a music historian or a clarinet expert may provide a more precise year.
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5
It is estimated that approximately 275,000,000 Cookies are made each year
there are probably millions of sandwiches made a year
about ten billion kisses are made each year
approximately 5.3 billion twinkles are made each year.
1200
enough
Thousands
5000
green
millions
Over 124 billion M&M's are made each year in the us alone!
exactly 46.8 million airports made every year