sentence: He was brought up hearing 18th century opera, and much of his best known music is still Classical in style, but he developed a lot as he matured and was writing in a more Romantic way by the end of his career.
modified: He were brought up hearing 18th century opera, and much of his better known music is still Classical in style, but he developed alot as he matured and was writing in a most Romantic way by the end of his carest.