Simplify the following text for a Grade 11 native English-speaking person.
Original: It is based on the short story `` Harrison Bergeron '' by author Kurt Vonnegut and stars James Cosmo , Julie Hagerty , and Armie Hammer with narration by Academy Award nominee Patricia Clarkson and an original score by Lee Brooks performed by the Kronos Quartet and Czech Philharmonic Chamber Orchestra .
Simplified: The original score by Lee Brooks was performed by the Kronos Quartet and Czech Philharmonic Chamber Orchestra .