The Kid is a musical with a book by Michael Zam, music composed by Andy Monroe and lyrics by Jack Lechner. The comic story concerns an open adoption process by a same-sex couple. It is based on the 1999 non-fiction book by Dan Savage, The Kid: What Happened After My Boyfriend and I Decided to Go Get Pregnant. The protagonist, Dan, is a sex advice columnist who decides to adopt a child with his partner Terry. Throughout the musical the couple encounter difficulties including making the decision to adopt, finding a birth mother, and overcoming apprehension about the adoption process.

The musical premiered on May 10, 2010 Off-Broadway, starring Christopher Sieber as Dan. It received a generally favorable reception and received five Drama Desk Award nominations in 2011, including Outstanding Musical, Outstanding Lyrics and Outstanding Book of a Musical;

Dan is a gay sex advice columnist ("I'm Asking You"), and his partner is Terry. The two initially become involved in a relationship with each other after bonding over a discussion of Gore Vidal ("Gore Vidal"). In a later scene, Dan attempts to convince Terry to leave a bathroom in a hotel where he locked himself inside after the two have an argument ("Terry..."). The couple meet with other individuals who are looking to become parents and adopt children ("They Hate Us"). Dan composes a satirical letter to potential birth mothers listing entries which should obviously not be included ("If You Give Us Your Baby"). Dan and Terry meet with an adoption counselor named Anne to go over their worries about becoming parents. The adoption counselor tells them, "Man or woman, gay or straight, what you're facing is a long, long wait." The couple decide upon an open adoption process, where they will be able to meet the baby's birth mother. Melissa, a teenager who is pregnant and homeless, selects them as the couple to care for her child ("Her Name Is Melissa"). She describes her life to Dan and Terry ("Spare Changin'").

Dan's mother informs him she knew he was gay as a child but did not meddle in his process of becoming a gay adult ("I Knew"). She reassures him during a period of nervousness, telling Dan, "If you think this is scary, wait. Do you know how terrified I was when you first had measles?" Bacchus, the biological father of Melissa's child, appears and becomes involved in the decision regarding the outcome for the baby ("Behind the Wheel"). Dan and Terry worry over whether Melissa will change her mind during the adoption process ("42 Hours"). After the child is born, the couple share the experience of holding their new baby together ("Beautiful"), and all ends happily ("My Kid").

Production on the musical began in 2005. Zam and Monroe had both previously read Savage's book. Monroe approached Zam and told him he thought the material would make a good musical. Zam and Monroe contacted Lechner, as they wished to have him involved in the musical's production process. In an interview with The New York Times, Zam later commented, "We also wanted to create a musical that was true to the experiences of Dan Savage and his partner, Terry, capture the essence of who they were, without just imposing our own plot and music on their lives. But it was also thrilling to create a show around a person who is not your standard role-model character, who is insightful about his foibles and admits to them and who has all these powerful emotions that we knew – somehow – could be turned into powerful songs."

After Zam, Monroe and Lechner determined an initial plan for developing the musical, Lechner contacted his friend Kate Clinton, who was also a friend of Savage and could make an introduction. The three-member production team met with Savage and convinced him of the merits of developing his book into a musical. Monroe told The Advocate, "Dan has a really good way of framing [adoption by gays] with his own brand of humor. It becomes less of a political piece and more of a human story." Savage gave feedback to the production team, during the adaptation process, providing them with "thousands of words of notes". The work takes the form of a "presentational musical", wherein the character of Dan speaks directly to the audience about his experiences.

The original production was organized by The New Group and directed by Scott Elliott. Dan was portrayed by Christopher Sieber. Elliott served as the artistic director for The New Group. Elliott observed to The New York Times, "One of the great parts of the book was that it was political without being political, that it tells a story of two guys creating a family without having to shove the politics of that experience in America down audience members' throats. But we were also conscious of the delicacy of turning a popular book, particularly one man's deeply felt memoir, into a piece of theater." Rosie O'Donnell promoted the musical through a discussion titled "The Modern Family: A Discussion of Gay Adoption" that was held by The New Group on April 18, 2010. O'Donnell commented, "I was blown away: here was the first show that really showed what it's like for a gay person who wants to be a parent – but also what it's like for anyone going through this crazy but thrilling process."

The musical premiered on May 10, 2010, Off-Broadway in Theatre Row, New York City at the Acorn Theatre. The production ran through May 29, 2010. Dan, Terry and their 12-year-old son DJ attended the premiere. Terry described the experience of watching himself portrayed onstage as "surreal".