Simplify the following text for a Grade 9 native English-speaking person.
Original: Josef MysliveÄ ek ( March 9 , 1737 -- February 4 , 1781 ) was a Czech composer who contributed to the formation of late eighteenth-century classicism in music .
Simplified: Josef MysliveÄ ek ( born Prague , 9 March 1737 ; died Rome , 4 February 1781 ) was a Czech composer in the classical music period .