A door closed behind a dark figure, slipping beneath it. It banged loudly as it hit the frame around it, and a key clicked in the darkness.
Aldanith sat down next to the bathtub and opened his laptop. The screen lit up with bright light, and his fingers were dancing on the keyboard with silent clicking. Someone behind the door was turning the doorknob around repeatedly, then hit the door, or kicked into it. A high-pitched voice, muffled by the door and walls, reached his keen ears.
"Stop playing videogames in the bathroom! People need to use it!" someone shouted. The dark elf rolled his eyes over. There were three other bathrooms... There was no need for this one to be opened, too. "For god sake, open the door! I need to come in!" the girl shouted. He only replied with a laugh, and put the headphones, till then around his neck, onto his ears.
He was able to get into they system of the laptop that the DJ upstairs was using, and loaded his music library into it... Now it only needed a little push to start playing. He set it on a timer, to launch in three minutes from now, and left his laptop on the bathroom floor. After peering through a gap between the door, he found out that nobody was in the corridor, and left, locking the door behind himself, and slipping the key into the pocket of his ripped black jeans.
His laughter echoed through the corridor. It was going to be amazing when all this crappy music will suddenly change to glorious metal... And the people around! Only a minute from now...