The “Glee” Cast’s “Thriller” / Yeah Yeah Yeahs Mash-Up Has LeakedThe “Glee” Cast’s “Thriller” / Yeah Yeah Yeahs Mash-Up Has LeakedThe "Glee" cast will perform a mash-up of MICHAEL JACKSON'S "Thriller" and a YEAH YEAH YEAHS song called "Heads Will Roll" on Sunday's post-Super Bowl episode. Check it out here.bigonkissbigonkiss