Complex sentence: Wesley Willis (May 31,1963--August 21,2003) was an American singer-songwriter and visual artist from Chicago, known for his simple but unique music, with emphasis on his humorous, bizarre, and frequently obscene lyrics.
Split into simpler sentences: Wesley Willis (May 31,1963--August 21,2003) was an American singer-songwriter and visual artist from Chicago. He is best known for his simple but unique music that featured his humorous, bizarre, and frequently obscene lyrics.