Finn Sanderson: 18;black cargo pants and blue navy shirt; son of Niel Anderson, co-founder and back up vocalist of Three Days Grace;

Marshall Grontier: Biogically 18-21; red and black plaid-button shirt;black skinny jeans; son of Adam Grontier the lead vocalist and guitarist of Three Days Grace

Prince Gumball or Bubba Walst: 22; hot pink shirt and purple pants; son of Brad Walst (shocking I know) the bassist of the band

Flame Prince or Jacob Stock: 18; red shirt and orange shorts; son of Barry Stock the lead guitarist

For the girls I couldn't think of anything plus I suck at describing outfits for girls so that's your imagination you can use! :) Finn and Fionna are siblings, but PB, PG, Flame Prince, Flame Princess, Marceline and Marshall Lee are not. I also do not own Adventure Time, Three Days Grace, nor (WARNING! SPOILER!) It's All Over which will be sung later in the story.

Marceline and her band, the Scream Queens, that now consisted an 18 year old Fionna, Flame Princess, and a 22 year old Bubblegum were just relaxing at Marceline's after an epic concert they finished.

"Our fans love us," Flame Princess said. "How could they not?" Marceline laughed. "I am very excited about our next concert," PB exclaimed. "Speaking of which, when is our next concert?" Fionna asked.

"Three days from now. We already have all the lyrics down for 'Love Bites but So Do I' we just need to rehearse a little more." replied Marceline. "How come we're participating in the Battle of the Bands this year?" PB asked.

"Because we won it last year and the year before. Don't you guys wanna take a break from that?" asked Marceline. "I think that sucks," Flame Princess said. "I'm the leader of this band. So my rules." Marceline stuck her tongue out at FP.

There was then a knock on the door. "Guys? It's us!" cried Finn. "Come in!" Marceline told him. An 18 year old Finn, a 22 year old PG and an 18 year old Flame Prince walked in.

"You guys were great!" Finn complemented. "I've got to admit, you four did a pretty good job," Marshall agreed. Fionna blushed. "It was fascinating and wondrous!" Gumball added. Bubblegum's face flushed at his comment.

"Cool," Flame Prince said flatly. Flame Princess rolled her eyes smiling. "Is that all you came here for?" Marceline asked.

"Well…we wanted to ask you if we could join your band," Finn said. "Sorry. No room. Plus the band title is Scream Queens. Last time I checked you four were just a human hero, a pink prince, a vampire king and prince made of fire." Marceline exclaimed.

"But didn't you have a guy in your group?" Finn objected. "Yeah, but he was just a spy for the Battle of the Bands last year."

"I can't believe this! We're getting discriminated because of gender! That's totally sexiest!" Marshall said angrily.

"All I said was that we don't have enough room," Marceline pointed out.

"Besides, I doubt you two would even be able to form a band of your own. Marshall's the only one with real musical talent out of you four." Fionna stated.

"We'll show you!" Flame Prince yelled. "Indeed! We shall prove to you that we can be talented in music!"

"Yeah!" Marshall said. "In fact, we'll prove it to you by forming our own band and setting up an opening mic concert by tomorrow night!" Finn shouted suddenly without thinking. He then covered his mouth after he finished his sentence.

"WHAT?!" Marshall, Gumball and Flame Prince yelled in shock.

Marceline smirked. "Alright. Let's make a bet. If you can successfully form a band and set up a concert with fans that will adore you, we'll let you join your band and take you out to dinner."

"But if you don't," Flame Princess added. "You have to reveal one of your most embarrassing secrets to the Candy Kingdom."

"Deal!" Finn shook hands with Marceline instead of Flame Princess since she would burn his hand.

"See you guys tomorrow," Marceline giggled as she let the boys out and closed the door.

"Nice, dude!" Marshall told Finn sarcastically. "How are gonna win this bet?" Flame Prince asked.

"We think of a band name. Then a song with lyrics. We rehearse. If we have time today we'll find a location for the concert and set it up there. If not we have a good dinner, get some good sleep, not wake up in a bad mood, have a healthy breakfast and then set up the concert. After that we rehearse more and have breaks in between." Finn explained.

"Slow down!" PG demanded as he frantically scribbled down what Finn had said on a notepad. "I can't write that fast!" Marshall shook his head as he slapped his hand on his forehead.