What the World Needs Now (Glee)

The episode was written by Michael Hitchcock, directed by Barbara Brown, and first aired on February 6, 2015 on Fox in the United States.

Rachel and Kurt Hummel (Chris Colfer) give New Directions members Kitty Wilde (Becca Tobin), Spencer Porter (Marshall Williams), Jane Hayward (Samantha Marie Ware), Roderick (Noah Guthrie), Mason McCarthy (Billy Lewis Jr.) and Madison McCarthy (Laura Dreyfuss) (joined by New Directions alumni Artie Abrams (Kevin McHale), Brittany, and Santana) their assignment to sing songs composed by Burt Bacharach, and they have brought in Mercedes to assist.

Unknown to Santana, Brittany poses as a nurse for Alma and begins to make a friendship with her, telling her that she is engaged but not who her fiancée is.

Returning recurring characters that appear in the episode include Heather Morris as Brittany Pierce, Naya Rivera as Santana Lopez, Becca Tobin as Kitty Wilde, Samantha Marie Ware as Jane Hayward, Noah Guthrie as Roderick, Marshall Williams as Spencer Porter, Billy Lewis Jr. as Mason McCarthy and Laura Dreyfuss as Madison McCarthy.

"Arthur's Theme (Best That You Can Do)" by Christopher Cross was sung by Criss, McHale, Williams, Guthrie, Lewis Jr., Overstreet, and Colfer.

[1] Lauren Hoffman from Vulture thought "the performances themselves are pretty flat", but later commented "it feels like a few short weeks from now, even after we've said good-bye to these characters, they'll still exist on each other's couches, laughing and singing in a happy heap.

Club's Brandon Nowalk stated in his review "The episode sneaks up on you, until finally you realize this is the most energized anyone in the cast has been in years.

"[4] Miranda Wicker from TV Fanatic believed that "Mercedes gave the final season the best subtitle it could possibly have when she noted that this, rehabilitating a defunct glee club, was a step on The Rachel Berry Rebuilding Project.