The producers of ‘The Simpsons’ 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. According to Variety, 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 September 26. The musical episode, titled ‘The Star of the Backstage’, will feature all original songs with Bell as Marge’s singing voice. “The premiere this year is the most musical episode we’ve ever done — almost wall-to-wall music. It’s like a Broadway musical of an episode, with all original songs, and we’ve got Kristen Bell playing the role of Marge’s singing voice. We all love Marge’s voice, but this is the singing voice that’s different, let’s just say,” Selman said.