Glee Season 4 Episode 21 Wonder-Ful aired Thursday, May 2 (9:00 PM ) on FOX
Summary: The members of New Directions take on the greatest hits of music icon Stevie Wonder. Then, Artie (Kevin McHale) receives news that could affect his and his mom’s (guest star Katey Sagal) future. Meanwhile in New York, Rachel prepares for her “Funny Girl” callback. Kate Hudson guest-stars.