Fox has released a new clip from Season 4 of Glee, returning this week with "The New Rachel" Thursday, September 13 at 9 PM ET on Fox. Kate Hudson guest stars as Cassandra July, the New York Academy for Dramatic Arts dance instructor of Lea Michele's Rachel. Take a look at this scene where Cassandra sings and dances to a mash-up of Lady Gaga's "Americano" and Jennifer Lopez's "Dance Again."