These two albums remain their most commercially successful releases, and provided them with mainstream status; the latter of the two holds their highest Billboard 200 entry, peaking at no.

Following their sixth studio album, Lost in the Sound of Separation, which also reached a top-ten peak on the Billboard 200, Gillespie left the group[5] and was replaced by former Norma Jean drummer Daniel Davison.

Their seventh album, Ø (Disambiguation), was released in 2010; Chamberlain and McTague provided more prominent sung vocals in Gillespie's absence.

Gillespie agreed, and the group recruited guitarist Corey Steger and bassist Octavio Fernandez; the band members were all in high school.

[10] In 2000, keyboardist Christopher Dudley joined Underoath, and the five-song, forty-minute long record, Cries of the Past was released, quickly selling 3,000 copies.

[12] The band then began working on their Solid State debut, The Changing of Times, with Cries of the Past producer James Paul Wisner.

[10] Under speculation of a potential breakup, the band then went on a supporting tour with Atreyu in August 2003 with Matt Tarpey as the temporary lead vocalist, while at the time being a part of Winter Solstice.

[16] During the early months of 2004, Underoath returned to the studio with Chamberlain as lead vocalist and producer James Paul Wisner.

"Reinventing Your Exit" and "It's Dangerous Business Walking out Your Front Door" were released as the album's two singles and both songs spawned music videos that received frequent airplay on MTV2 and Fuse.

[31] It was also spread that the band's withdrawal from the tour was due to Chamberlain's rumored drug problems and time spent in rehabilitation, to which Gillespie responded, "If there was something serious going on like that and he was in rehab, we'd have to tell the press.

During a tour with Maylene and the Sons of Disaster, Poison the Well, and Every Time I Die, Gillespie went through emergency surgery on an infection in his hand.

"The Audible Diversion Group", a small film team, shot footage of the band as they followed Underoath on their September tour and the entirety of the "We Believe in Dino-Tours".

[38] After the release of Lost in the Sound of Separation on September 2, 2008, Underoath began headlining tour in support of the album, along with Saosin and The Devil Wears Prada, and in various markets, P.O.S, Person L, and The Famine.

[59] In January 2015, the band launched a campaign to finalize production of documentary film about their farewell tour of 12 shows,[citation needed] posting two trailers on that subject to their YouTube channel.

In July 2015, Underoath began teasing the phrase "rebirth is coming" and an accompanying cryptic video across their social media accounts.

[60] On August 17, 2015, the band's first show since disbanding in 2013 was announced, headlining the Self Help Fest in San Bernardino, California on March 19, 2016, along with A Day to Remember.

[66] The lead single of the album, "On My Teeth", received a Grammy nomination for Best Metal Performance; it lost to High on Fire's "Electric Messiah".

[75] Underoath were the featured artist on three tracks in 2024: Bring Me The Horizon's "A Bullet w/ My Name On",[76] Mitchell Tenpenny's "Demon or Ghost"[77] and Des Rocs' "In The Night".

[79] Also in December, at a concert in St. Petersburg, Florida, Dallas Taylor appeared on stage with Underoath and performed the song "When the Sun Sleeps" alongside all current members.

At various junctures, Erase Me illustrates those moments of sanctuary, anxiety, betrayal, and conflict that inevitably arise when humanity grapples with belief systems.

"[63][88] In a 2018 interview, Spencer Chamberlain stated that, "my journey and my role in playing in a Christian band, I held a huge burden and I got burnt badly and was treated awfully.

[90] The band's style has changed over the years, as explained by AllMusic: "since their inception, Florida's Underoath have evolved from a run-of-the-mill Christian metalcore band into a fluid, dynamic, and energized rock group that adeptly blends emotive melody, charged punk rock rhythms, and a chunky, engaging bottom end.

"[10] Jesus Freak Hideout also took notice of this, mentioning in a review that "Underoath's sound has evolved a lot — from metal to emocore to straight-up hardcore.

[96][94] On the follow up release, Underoath stood "at the heavy metal crossroads on The Changing of Times, a hardcore album that parallels classic arena rock.

"[98] He also noted the addition of Aaron Gillespie's sung singing, which offered "a compelling counterpoint and presaged a swarm of bands adopting the sing-scream dichotomy that would become the hallmark of 'screamo.

"[99] Underoath underwent an extreme overhaul preceding their fourth release, They're Only Chasing Safety, with Dallas Taylor and Octavio Fernandez leaving the band and Spencer Chamberlain taking over lead vocal duties.

[100] A review by Alex Henderson of AllMusic classifies the album under an alternative rock style which could be described as screamo, post-hardcore, or melodic hardcore, and which differed from full-out metalcore.

[96] AllMusic stated that the band found the "delicate middle ground between throat-shredding grindcore and My Chemical Romance/From Autumn to Ashes-style emo-punk,"[103] and Cross Rhythms described the album as "an impressively versatile project where metal riffs and emo breakdowns, screamo noise and memorable hooks collide in a veritable sonic feast.

"[106] Ø (Disambiguation) featured a darker and more immersive approach than their previous albums, and used a heavy atmospheric and ambient sound and also utilized groove sections on some tracks.

Beginning with They're Only Chasing Safety, the writing dynamic changed in the band, as Chamberlain and drummer/vocalist Aaron Gillespie now wrote all the lyrics they sang.