Johann Christian Bach (5 September 1735 – 1 January 1782) was a German composer of the Classical era, the youngest son of Johann Sebastian Bach. He received his early musical training from his father, and later from his half-brother, Carl Philipp Emanuel Bach in Berlin. After his time in Berlin he made his way to Italy to study with famous Padre Martini in Bologna. While in Italy, J.C. Bach was appointed as an organist at the Milan Cathedral. In 1762 he became a composer to the King’s Theatre in London where he wrote a number of successful Italian operas and became known as "The English Bach". He is responsible for the development of the sinfonia concertante form. He became one of the most influential figures of the classical period, influencing compositional styles of prolific composers like Joseph Haydn and Wolfgang Amadeus Mozart.