Complex sentence: Ian Kevin Curtis (15 July 1956--18 May 1980) was an English musician, best known as the lead singer and lyricist of the post-punk band Joy Division.
Split into simpler sentences: Ian Kevin Curtis (15 July 1956--18 May 1980) was an English musician, singer and songwriter. He is best known as the lead singer and lyricist of the post-punk band Joy Division.