The genius of Johann Sebastian Bach often overshadows the achievements of his four prodigiously talented sons, all of whom played a crucial role in further advancing music?s development during the 18th century. Johann Christian, the youngest, was indeed among the most pivotal composers of his day, his move to Italy in 1755 precipitating a noticeable change in style that, known as the galant, looked forward to the soon-to-emerge Classical period.