In an interview with Playbill.com last fall, Lopez broke the news of his work with "The Simpsons" writers on an original song for the long-running animated series. Lopez confirmed to Playbill.com that the upcoming episode is titled "A Totally Fun Thing Bart Will Never Do Again."
According to Fox, "Cruise ship entertainment director Rowan (guest voice Steve Coogan) entertains the ship's passengers with a song that causes Bart to realize their vacation won't last forever." Treat Williams is also one of the guest stars.
Last fall Lopez and his Tony-winning Book of Mormon collaborators – "South Park" creators Trey Parker and Matt Stone – reunited for a special theatre-themed episode of "South Park" titled "Broadway Bro Down."
"The Simpsons" airs Sunday nights at 8 PM ET on Fox.