THE NEXT ROLLS INTO NEW YORK — The four mentors work with their local contestants: David, Frankie, Ali and Baiyu. John Rich rides a horse through Harlem and surprises David. Joe Jonas meets Frankie’s big Italian family. Gloria Estefan surprises Ali at a nail salon. Nelly helps Baiyu work on her wardrobe and they clean out her closet. The local contestants perform at the Paramount Theatre.