As sound is basically just a wave, it’s entirely possible to completely and utterly eliminate it by blasting another sound of the exact opposite frequency at it, at the same volume. This is known as anti-sound.
In fact there’s a machine that has been invented that is capable of blasting out anti-sound tuned to whatever unwanted noise you wish to block out.
This means, there is someone out there with the ability to silence Justin Bieber forever. The ability to trap him in a void of perpetual non-sound, punctuated only by a barrage of middle fingers and boos.
The fact this person hasn’t done so yet can only mean that they’re the most evil person to set foot on our planet and it’s only a matter of time until they ride their giant sound ray into battle. The worst part being, we’d never hear them.