GLEE Season 4 Episode 21 Wonder-ful Promo : The members of New Directions take on the greatest hits of music icon Stevie Wonder. Meanwhile, Artie receives news that could affect his future and his mom (guest star Sagal). In New York, Rachel prepares for her “Funny Girl” callback in the all-new “Wonder-ful” episode of GLEE airing Thursday, May 2 (9:00-10:00 PM ET/PT) on FOX. (GLE-421) (TV-14 D, L)
