Early Training in Germany: Despite being the youngest son of Johann Sebastian Bach, Johann Christian was heavily influenced by his father's musical legacy. He received his early musical education in Leipzig and later studied with his half-brother, Carl Philipp Emanuel Bach, in Berlin.

1. Italian Influences: Johann Christian Bach spent several formative years in Italy, where he absorbed the music of Italian composers such as Vivaldi and Scarlatti. His exposure to Italian opera seria and the galant style profoundly shaped his compositional style, emphasizing melody, elegance, and drama.

2. Career in England: In 1762, Johann Christian Bach settled in London, where he enjoyed great success as a composer, conductor, and keyboard virtuoso. He became a prominent figure in London's musical scene, collaborating with leading musicians and composers of the time.

3. Mentor to Mozart: Johann Christian Bach had a significant influence on the young Wolfgang Amadeus Mozart during the latter's visit to London in 1764-1765. Mozart admired Bach's compositions and learned from his mastery of melody and form, forging a lasting friendship and musical kinship.

4. Legacy and Contributions: Johann Christian Bach's music epitomized the galant style of the late 18th century, characterized by its simplicity, clarity, and elegance. His compositions, including symphonies, operas, keyboard works, and chamber music, exerted a profound influence on the development of Classical music, paving the way for the symphonic and operatic masterpieces of later composers.