Complex sentence: Behind the Music is a 1988 Kushner-Locke Company television production, an "unofficial" biopic drama on the life and death of Liberace, who went from a modest working-class background to become a famous American pianist and vocalist.
Split into simpler sentences: Behind the Music is a 1988 Kushner-Locke Company television production. It is an "unofficial" biopic drama on the life and death of Liberace, who went from a modest working-class background to become a famous American pianist and vocalist.