Fionna and Cake Theme Song “This is a song sung by Baby Fionna. While in Fionna's mind, Marshall Lee witnesses a memory of... Baby Fionna Song “Oh, Fionna is a song that Prince Gumball (actually Ice Queen in disguise) sings to Fionna in... Oh, Fionna Fionna and Marshall Lee Pages in category "Music" The following 4 pages are in this category, out of 4 total. B Baby Fionna SongF Fionna and Cake Theme SongFionna and Marshall LeeO Oh, Fionna Retrieved from "http://genderswappedadventuretime.wikia.com/wiki/Category:Music" Ad blocker interference detected! Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.