In 2008, Kitt teamed with Brian Yorkey to create Next to Normal, a show about mental illness in suburban America.

He had met Yorkey while studying at Columbia University, and they had attended the BMI Lehman Engel Musical Theatre Workshop as a team.

"[8] Kitt received the 2009 Frederick Loewe Award for Dramatic Composition for Next to Normal from the Dramatists Guild of America.

[13] Kitt composed the score for The Public Theater Shakespeare in the Park (New York City) production of The Winter's Tale, which ran in July 2010.

[citation needed] He worked with Brian Yorkey on a new musical titled If/Then which was workshopped in 2013 in New York City with Idina Menzel in the lead role.

The show is directed by Michael Greif, produced by David Stone, and stars Menzel, LaChanze and Anthony Rapp.

The musical, developed by Disney Theatrical, began performances at the Signature Theatre, Arlington, Virginia on October 4, 2016.

Directed by Christopher Ashley, with choreography by Sergio Trujillo, the cast featured Emma Hunton, Jason Gotay and Heidi Blickenstaff.

[24] Superhero, a new musical by Kitt and John Logan, premiered Off-Broadway at Second Stage Theatre, with an official opening on February 28, 2019.

[25][26] Kitt had reteamed with Brian Yorkey for a musical adaptation of Magic Mike, with Roberto Aguirre-Sacasa writing the book.

[27] By May 2019, the creative team of Kitt, Yorkey and Aguirre-Sacasa left the project and a developmental lab that had been scheduled for the week of May 3 was cancelled.

[33] Kitt is the composer of the musical titled Flying Over Sunset, which was expected to premiere in a Lincoln Center Theater production on Broadway on March 12, 2020 in previews.