Simon & Marcy "everyone [working on the series] was pitching in to make this one special". The episode features the voice of Ava Acres, who portrays the young version of Marceline. Acres had previously appeared in the third season episode "Memory of a Memory". As mentioned above, the episode makes notable use of the 1982 song "Where Everybody Knows Your Name" by Gary Portnoy—better known as the theme to the sitcom "Cheers". According to Sugar's father, Rob, on his official YouTube channel, the use of the song started merely as a placeholder. However, as the episode developed, Sugar decided to keep it in
Mike Portnoy the "Modern Drummer" Hall of Fame, at 37 years of age. Besides his work with Dream Theater, Portnoy is known for his many side projects and tribute bands. He is a founding member of Liquid Tension Experiment, an instrumental progressive rock band featuring fellow Dream Theater members John Petrucci and Jordan Rudess along with bassist Tony Levin. He is also a founding member of Transatlantic, a progressive rock "super-group" featuring former Spock's Beard keyboardist/vocalist Neal Morse, Flower Kings guitarist Roine Stolt and Marillion bassist Pete Trewavas. Portnoy has also recorded and/or toured/performed live with Neal Morse, OSI, Hail!, Stone Sour,