Complex sentence: He went on to appear in numerous features and television shows; one day his mother dropped him off at Twentieth Century Fox (dressed in knee high socks and a lederhosen) to audition for a role in "The Sound of Music".
Split into simpler sentences: He went on to appear in numerous features and television shows. One day his mother dropped him off at Twentieth Century Fox (dressed in knee high socks and a lederhosen) to audition for a role in "The Sound of Music".