Underoath (occasionally typeset as underOATH or UNDERØATH) is an American Grammy Award-nominated metalcore band originally formed on November 30, 1997 in Ocala, Florida, but since then, the new members that joined were from Tampa, Florida. Tampa is now where they say they are from. The band's line-up consists entirely of Christian members. They are currently signed with Solid State Records, a subsidiary of Tooth and Nail Records, and are the label's most popular group.
After several line-up changes, Underoath's only original member is drummer Aaron Gillespie. During the band's early years, when they were fronted by former vocalist Dallas Taylor, Underoath displayed a more deathcore sound with their music, with the exception of clean vocals, and the usage of double-bass drums and breakdowns. With Taylor, they released Act of Depression, Cries of the Past, and The Changing of Times. Following his departure, Spencer Chamberlain became lead vocalist. The band then released They're Only Chasing Safety and Define the Great Line, gaining a certified gold rating and the highest-charting Christian album on The Billboard 200 since 1997, respectively. These two albums have given them more mainstream and commercial success.
They have recorded a live CD/DVD album called Survive, Kaleidoscope, which was released on May 27, 2008. From late February to early May the band recorded a new studio album called Lost in the Sound of Separation, which was released on September 2, 2008, peaking at number 8 on the Billboard 200.