Johann Christoph Denner (August 13, 1655–April 20, 1707), was a famous woodwind instrument maker of the Baroque era, to whom the invention of the clarinet in 1690 is attributed. August 13 is the 225th day of the year in the Gregorian Calendar (226th in leap years), with 140 days remaining. ... Events March 25 - Saturns largest moon, Titan, is discovered by Christian Huygens. ... April 20 is the 110th day of the year in the Gregorian calendar (111th in leap years). ... Events January 1 - John V is crowned King of Portugal March 26 - The Act of Union becomes law, making the separate Kingdoms of England and Scotland into one country, the Kingdom of Great Britain. ... A woodwind instrument is a musical instrument in which sound is produced by blowing through a mouthpiece against an edge or by a vibrating reed, and in which the pitch is varied by opening or closing holes in the body of the instrument. ... Baroque music describes an era and a set of styles of European classical music which were in widespread use between approximately 1600 to 1750 (see Dates of classical music eras for a discussion of the problems inherent in defining the beginning and end points). ... A bass clarinet, which sounds an octave lower than the more common Bâ™­ soprano clarinet. ...

Denner was born in Leipzig. The clarinet evolved from an earlier instrument called the chalumeau. With the help of his son Jacob Denner, JC Denner improved the chalumeau, creating a new instrument called the clarinet. Denner altered the position of one of the two keys of the chalumeau, thus increasing the range by over two octaves. He also created a better mouthpiece and enlargeded the bell of the instrument for better projection and resonance. He died at Nuremberg, (help· info) [] (Sorbian/Lusatian: Lipsk) is the largest city in the Federal State (Bundesland) of Saxony in Germany. ... The chalumeau is a musical instrument, believed to have been invented in the late 17th century by Johann Christoph Denner, and the immediate ancestor of the clarinet. ... Jacob Denner (1685-1735) was a woodwind instrument maker of Nuremberg. ... Hl. ...