Austin Robert Carlile (born September 27, 1987) is an American musician and baseball coach from Pensacola, Florida. He achieved prominence as formerly the lead vocalist of Attack Attack! and Of Mice & Men. After leaving Of Mice & Men, he began coaching youth baseball in Costa Rica. A high school athlete, multiple surgeries from Marfan syndrome during his teenage years turned him towards music. In December 2016, Carlile departed from Of Mice & Men due to his Marfan syndrome and the effects that his vocal performances were having on his body. Musical career Attack Attack! (2006–2008) Carlile formed Attack Attack! (originally called Ambiance) around 2006 when Johnny Franck, Andrew Whiting, Nick White, and Andrew Wetzel met Carlile while playing in local high school bands. In 2008, halfway through a tour supporting Maylene and the Sons of Disaster, Confide, A Static Lullaby, and Showbread. Carlile was replaced by Nick Barham, brother of former Sleeping with Sirens drummer Gabe Barham. Carlile said it was for "personal reasons" that he left the band, while the band released a separate statement. Of Mice & Men (2009–2010, 2011–2016) On October 8, 2009, the same day Carlile announced that he was no longer a part of Attack Attack!, he officially announced the formation of his new project, Of Mice & Men, with Jaxin Hall (bassist). Their first release was "Seven Thousand Miles for What?". They also did a cover of Lady Gaga's "Poker Face", then soon after released "No Really, It's Fine". Soon after, Austin and Jaxin started to gather up the other members of the band. The band recruited several members of already-existing bands, such as Phil Manansala (lead guitarist) from A Static Lullaby, and Valentino Arteaga (drummer) from Lower Definition. Their self-titled debut album was officially announced to be released on February 23, 2010, but was delayed until March 9 for finishes on production. In 2010, Austin was unable to tour with Of Mice & Men, because he needed to have major heart surgery, and his health prevented him from touring. Jerry Roush from Sky Eats Airplane served as the tour replacement for Austin. Roush then became a permanent substitute, even after Carlile was able to tour again. In September 2010, shortly after the departure of Craig Owens of Chiodos, rumors that Carlile would replace him circulated quickly, but were denied when Brandon Bolmer was announced as vocalist. A fake tweet from Carlile's account