|The following information is from the Adventure Time comic book series.|
It may not be part of the same canon or continuity as the animated series.
Tuff, who had been setting up the stage, leads them to it and reveals that the audience was hoping for an acoustic set. Then the band performs and Marceline seems quite pleased.
As Princess Bubblegum says her goodbyes to the rest of the band, Marceline and Tuff are seen lying on a cloud above them. Marceline expresses her frustration at the amount of attention that her tour has given her. Wishing that all her performances were as small intimate and the one they just played, Marceline begins to think that she may want to stay in the Nightosphere. Marceline asks Tuff what he thinks of the idea. As he responds that she will have to figure that out for herself, Princess Bubblegum and Tree Trunks enter a portal to leave the Nightosphere.