Jem was peacefully reading a book when a blast of... music... played from across the hall.

To be honest, Jem didn't really know if it was music or not. He could recognize instruments and sounds in the music, and the male voice was singing quite... nicely. The thing that was unfamiliar with this music is that there were also instruments and sounds that were unfamiliar, maybe still hasn't existed.

Curiosity getting ahead of him, Jem stood and went up to the room across the hall, determined to find out about this 'music'.

Jem knocked on the door as the 'song' changed into a more... louder, different tune, this time with a female singer. The 'song' suddenly stopped and a girl with brown hair and gray eyes opened the door. The girl was wearing something very... different, but Jem tried to ignore it. He saw that she was slightly staring and got a bit self conscious. The girl looked away, but Jem caught a blush spreading across her cheeks.

Jem smiled at the girl. "Sorry to interrupt, but I heard music...?" Jem was still uncertain if it was music.

"Oh! Sorry if I woke you up. I was just playing music I like from where I come from." The girl seemed genuinely sorry as she explained.

Where I come from... Is she the Tessa Gray Charlotte told Jem about? "It's alright. You're Tessa Gray right? So that's music from the future?"

"Yeah, there are different types of music in the future. What's your name, by the way?"

Jem smiled. "I'm James Carstairs, everybody calls me Jem. Nice to meet you."

"Nice to meet you too, call me Tessa instead of 'Miss Gray', please. So you're the Jem Will keeps asking about."

"Will asked for me?"

"Yeah. But hey, why don't you come in and stop standing out there like an idiot?" Tessa opened the door wide enough to let Jem in.

Jem raised an eyebrow and walked into the room. The room was just like all other rooms in the Institute, it was boring, to his taste, but Tessa's was a bit different. There was a strange, rectangular, black and white thing on the nightstand, and there were wires connecting to a black box. On the bed there was a smaller black thing.

Tessa must've noticed Jem looking curiously at the objects, and explained them to him. "The thing on the nightstand is something called a 'laptop'. A laptop is something you use to... Well, it's just very useful. The thing on my bed is called a 'phone'. It's a portable device that is able to contact a person from a large distance, which includes all the way across the globe, though it would cost a lot of money. The phone can also play music and do many other things."

"So you're saying the loud music was playing from that." Jem pointed out.

"Basically, yeah."

"Will you play me a song?"

Tessa looked at Jem questioningly. "There are many different types, or called genres, of music in the future. It includes pop, rock, country, classic, jazz, hip hop, electronic, and more. Depends what you want to hear."

"Well, I'll listen to whatever you like." Jem said with an infectious smile.

"Alright." Jem watched as Tessa pressed a button on the 'phone', which surprised Jem as the screen immediately lit up. Tessa tapped and swiped her finger across the screen, doing something Jem does not understand. "Ready?" Tessa asked.

Jem nodded and she tapped the screen again. Music started playing, but instead of an upbeat song like the one he heard before, violins played. A while later a male voice start singing. Jem closed his eyes and absorbed the music.

To Jem, it was beautiful. Multiple violins played in the background as the man sang about hoping to get a second chance with a girl. A steady beat played in the background, as a different voice started singing. The music exploded into a loud chorus with more instruments added in. Multiple voices blended together as they sang different things. One separated from the others as it sang the high note at the end of the bridge. A female voice joined it. Jem opened his eyes to find Tessa softly singing to it.

Soon, the song ended and the room was filled with silence.

Tessa cleared her throat. "Well... Did you like it?"

Jem quickly nodded. "Yes. I liked how they mixed different instruments to make beautiful music."

"Well, the song's called Gotta Be You by One Direction."

"Who's One Direction?"

"This boy band. That sing songs. And stuff."

"Oh. The violin in it was nice."

"Do you play the violin?"

"Yes, I do." Jem smiled.

Tessa smiled back. "Would you play a song for me sometime?"

"Sure."

Tessa looked sleepy. Jem looked at the time and saw it was very late.

"I should leave you now to sleep, it's late." Jem said.

"Okay... Goodbye..." Tessa mumbled, just about to fall asleep.

Jem quickly closed the door to her room behind him and went back to his room.

Tessa woke up tangled in the sheets.

She untangled herself from the sheets and rolled off the bed with a thump. Tessa sat up and scratched her head groggily, still disoriented from sleep. She got up from the ground and straightened her pajamas－tank top and sweat pants－and stumbled into the bathroom.

When she got out, she changed into new clothes and fell back onto the bed. She felt extremely lazy today. Just sleeping in and not doing anything for the whole day seemed really appealing to her. Though the loose gray shirt was nice, the denim jacket and skinny jeans weren't helping her sleep.

Tessa didn't notice Sophie come in until the blinds were open. Before she would've squirmed under sunlight, but here in London it's always gray and rainy. It was the rustle of blinds opening that made her notice.

"Miss Gray, it's time for breakfast. Everyone is waiting for you." Sophie told her.

Tessa groaned and got up slowly, then reluctantly followed Sophie to the dining room.

Tessa sat down in her seat and planted her face on the table.

"Tessa, have you met Jem－" Charlotte started.

"Yes, Tessa has met me. We met last night in the corridor." Jem stated.

Sophie pushed her way in the dining room with plates of food in her hand. She set them down and walked away.

Tessa looked down at her breakfast. She didn't really have an appetite today. Sure, last night was pleasant, meeting Jem, he seemed like a real nice guy, but today, something just wasn't right. Tessa stood up and excused herself from the room.

Wandering around the Institute, Tessa had a feeling she was lost. Corridor after corridor she walked, yet she still can't find her room. How she found it yesterday, she will never know. Tessa took another turn and started walking past the doors of the corridor.

"Lost, are we?" A voice spoke from behind.

Tessa whirled around and found herself face to face with Will.

"No I'm not. What are you doing here?" Tessa asked.

"Charlotte sent me here to get you, she needs to speak to you."

"Oh. Well. Where is she?"

"Follow me."

Tessa followed Will to a large door. He opened the door and beckoned her in before leaving to do whatever Will does. Tessa saw Charlotte at a desk, scribbling furiously on paper.

"Uh, Charlotte? You called me?" Tessa spoke up.

"Oh! Well, take a seat, Tessa." Charlotte looked up from her paperwork and shoved the paper to the side.

"What do you need me here for?" Tessa pointed out.

"We need to explain some things to you, Tessa nodded for her to go on, "Well, you see... We aren't normal people. We are not mundanes at all－"

Tessa raised a hand as if asking a question in class. "Excuse me, but, what are 'mundanes'?"

Charlotte sighed. "I forgot you don't know any thing about the Shadow World..."

"What's the Shadow World?"

"I'll explain it all. Mundanes are just normal, average people. The Shadow World is a world that mundanes can't see. People here under the roof of the Institute except for Sophie, Agatha, our cook, and Thomas, our carriage driver, are Shadowhunters. Shadowhunters are half angel, half human, and we're here to fight demons."

"So you're saying those demon crap are real."

"Yes. There are also Downworlders. They are creatures, creatures like vampires, werewolves, faeries, warlocks－"

"Those stuff are real too?!"

Charlotte sighed. "Yes, they are."

"Now what? Are zombies real now too?"

"No... Anyways, we have special runes that increase our abilities or help us in ways."

Will suddenly burst through the doors. "I found it! Here, read this instead of having poor Charlotte explain everything." Will handed Tessa a book.

"'The Shadowhunter Codex'? What's this about?" Tessa asked.

"It's about everything you should know about the Shadow World." Will answered.

"Are you a Shadowhunter?"

"Do you know you ask too many questions?"

"My brother always said curiosity was my besetting sin."

"I have to say I must agree with your brother."

"Well, move along and chat outside of here. I have a lot of paperwork to do." Charlotte interrupted. Tessa looked at Charlotte closely. She had bags under her eyes and seemed really tired.

Tessa grabbed the book and hurried out of the room, still in the middle of processing everything Charlotte told her. After stopping to ask Sophie for directions, she collapsed on her bed. Tessa opened the Codex and started reading, shortly after falling asleep on it.

A/N okay, so this isnt my best work, but i was writing this late at night... and there was no wessa scene. well, i keep breaking my promises. but hey, jem and tessa got to know each other by music. not really jessa, but whatever.

i chose Gotta Be You as a song because i thought jem would like it, because it's sorta slow and has violins in it :)

R&R! :)