"Kidney Now!" is the twenty-second episode and season finale of the third season of the American television comedy series 30 Rock, and the 58th overall episode of the series. It was directed by series producer Don Scardino, and written by show producers Jack Burditt and Robert Carlock. The episode originally aired on NBC in the United States on May 14, 2009. Guest stars in this episode include Alan Alda, Kay Cannon, Donald Glover, Napiera Groves, Chris Parnell, Paula Pell, and Sherri Shepherd. In addition, "Kidney Now!" featured many musical guest stars including Clay Aiken, Elvis Costello, Mary J. Blige, Sheryl Crow, the Beastie Boys (Mike D and Ad Rock), Steve Earle, Adam Levine, Sara Bareilles, Wyclef Jean, Norah Jones, Talib Kweli, Michael McDonald, Rhett Miller, Moby, Robert Randolph, Rachael Yamagata and Cyndi Lauper, all as themselves. In the episode, Jack Donaghy (Alec Baldwin) gets to know his newly discovered father, Milton Greene (Alda), but quickly learns that Milton needs a kidney transplant, and discovers he is not a suitable donor. As a result, Jack decides to use the liberal media to find an alternate way to get him a kidney donor. Meanwhile, people seek Liz Lemon (Tina Fey) out as a relationship expert as a result of her "Dealbreaker" sketches, and Kenneth Parcell (Jack McBrayer) helps Tracy Jordan (Tracy Morgan) deal with his embarrassment over not finishing high school. The song "He Needs a Kidney" was written by show composer and co-executive producer Jeff Richmond. The concept of doing a charity concert was based on Robert Carlock and series creator Tina Fey wanting to include a musical performance in the episode with the Milton Greene character in need of a kidney donor. Carlock and Fey wanted "He Needs a Kidney" to be similar to the 1985 charity song, "We Are the World". Following the airing of this 30 Rock episode, NBC released the musical performance video of "He Needs a Kidney" on iTunes with all proceeds from the sales going to the National Kidney Foundation. "Kidney Now!" was generally well received among television critics. According to the Nielsen Media Research, this episode was watched by 5.7 million viewers. Jack Burditt and Robert Carlock were nominated for a Primetime Emmy Award nomination in the category for Outstanding Writing in a Comedy Series for their work in this episode. In addition, Tony Pipitone and Griffin Richardson received a Creative Arts Emmy Award