He composed over 600 works, many recognized as peaks of symphonic, concertante, chamber, operatic, as well as choral songs. He is amongst one of the most enduringly prominent of timeless authors, and his influence on subsequent Western art music is profound; Ludwig van Beethoven composed his own very early operate in the shadow of Mozart, as well as Joseph Haydn created that "posterity will certainly not view such a skill once more in 100 years.".