In 2009, Brian had the swine flu, and after recovering from it, he suddenly got muscle tension dysphonia which is a condition that tightens the vocal chords, causing him to sound hoarse and his voice being strained, which is a struggle to sing let alone talk, but because he has been going to therapy for it and opening up about it in the documentary they did called Show'em What You're Made Of (same name as the single from In A World Like This), he's gotten a lot better though he still has issues with it a little bit.
