Underoath - Define the Great Line 20th Anniversary Tour

It was founded by lead vocalist Dallas Taylor and guitarist Luke Morton in 1997 in Ocala, Florida; subsequently, its additional members were from Tampa, including drummer, singer and last remaining original member Aaron Gillespie.

The band's lineup of guitarists John Benjamin "JB" Brubaker and Brent Rambler, drummer Matt Greiner, lead vocalist Jake Luhrs and bassist Dustin Davidson has remained consistent since 2006.

The band's current line-up consists of guitarists Dan Jacobs and Travis Miguel, lead vocalist Brandon Saller, bassist and unclean vocalist Marc "Porter" McKnight and drummer Kyle Rosa.