In "Scary-oke," after the defeat of Gideon and reclaiming the Mystery Shack, the Pines family announces that they will be throwing a party to celebrate. Mabel adds that there will be a performance by their family band "Love Patrol Alpha," though Stan and Dipper say that this isn't going to happen.
After Dipper raises the Undead to try and prove to Agent Powers and Agent Trigger that the journal isn't fake, he discovers that the only way that the Undead can be defeated is by shattering their skulls with a perfect three-part harmony. Mabel suggests that they sing together to stop the zombies. The three get on the roof of the Mystery Shack, and Mabel announces that Love Patrol Alpha will be performing (though Dipper says he "never agreed to that name"). They sing "Taking Over Midnight" by &ndra, defeating the zombies.