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 soon after. In spring 2010, Portnoy filled in for Avenged Sevenfold's former drummer, Jimmy "The Rev" Sullivan, who died during the production of the band's fifth album "Nightmare". On May 5, 2010, Portnoy released a statement on his status with Avenged Sevenfold on their official website: "Although I wish I could stay on board with Avenged in a more permanent capacity, the reality is that I am committed to Dream Theater as my main priority and I will need to resume work with them to start a new album at some point in 2011...However, I will be able to join