Season 33 Of “The Simpsons” To Premiere With First All Musical Episode Season 33 Of “The Simpsons” To Premiere With First All Musical Episode Comments Off on Season 33 Of “The Simpsons” To Premiere With First All Musical Episode WASHINGTON — The producers of “The Simpsons” on July 24, 2021, revealed that the upcoming season 33 of the long-time running show will kick off in a musical fashion with a little help from “Frozen” star Kristen Bell. During the comic-con panel of “The Simpsons Season 33 and Beyond,” executive producer Matt Selman teased what fans can expect from the Season 33 premiere, which will air on Sept 26, 2021, said reports.