What would you do if you heard that you that you could win a guitar signed by 5 Seconds of Summer? We'd probably freak out, and you should, too -- because we've got an autographed guitar from the guys ...

5 Seconds of Summer released their highly anticipated 'Amnesia' music video just 30 minutes ago, and already the die-hard 5SOS fan base has started multiple trending topics about the vid. That's some ...