Crazy Ex-Girlfriend (season 4)  The fourth and final season of "Crazy Ex-Girlfriend" premiered on The CW on October 12, 2018 and ran for 18 episodes until April 5, 2019. The season stars Rachel Bloom as Rebecca Bunch, a distraught young woman, dealing with the consequences of pleading guilty to attempted murder at the end of the previous season. Co-stars include Vincent Rodriguez III, Donna Lynne Champlin, Pete Gardner, Vella Lovell, Gabrielle Ruiz, Scott Michael Foster, and Skylar Astin. Every song listed is performed by Rebecca, except where indicated. This season, at the end of the theme song, the woman who is "mistaken" for Rebecca (portrayed by Siri Miller) has a different line. A 42-minute documentary about the making of the series finale, entitled "Crazy Ex-Girlfriend: Oh My God I Think It's Over", was released on the CW Seed app on March 30, 2019. The series was renewed for a fourth season on April 2, 2018. Along with the renewal announcement, creator and star Rachel Bloom stated that the fourth season would be the series' last. On July 13, it was announced that The CW had ordered 18 episodes for the final season, up from the past two seasons, which both contained 13 episodes. On August 6, it was reported that the role of Greg, played by Santino Fontana during the show's first two seasons, was recast with Skylar Astin in order to "explore how perception changes." The full season four soundtrack was released on August 7, 2019. Included bonus tracks include demo versions of "Trapped in a Car", "Eleven O'Clock", "Hello, Nice to Meet You" and "Sports Analogies", and a demo version of a parody of "The Telephone Hour" from "Bye Bye Birdie" called "Josh Chan Is Single". Also included are seven tracks from the score by Jerome Kurtenbach, Tom Polce and Frank Ciampi. The fourth season received critical acclaim. On Rotten Tomatoes, the season holds a Certified Fresh rating of 100%, with an average rating of 10/10. The critical consensus reads "Carried by the exceptional Rachel Bloom and her equally talented castmates, "Crazy Ex-Girlfriend"'s final season further explores the depths of Rebecca's mental illness with humor, heart, and humanity."