The group has undergone several line-up changes throughout its career, with lead guitarist ER White being the sole remaining founding member.

[1][2] The band released their debut studio album, Relativity (2008), which featured vocalist Jonny Craig and rhythm guitarist Jonas Ladekjaer.

Following Craig's departure, the band toured briefly with Tilian Pearson filling in on vocals before entering a period of inactivity.

Emarosa began with keyboardist Jordan Stewart, drummer Lukas Koszewski and guitarist ER White having the decision of either attending college, or staying in their hometown of Lexington, Kentucky to start a new band.

[3] The band origins date back to early high school, which was said by keyboardist Jordan Stewart on Indiestar.tv.

[4] Emarosa, formed in 2006 as Corsets Are Cages, recorded a three-song demo during with vocalist Chris Roberts and rhythm guitarist Mike Bryant, however they left the band.

The band recruited Chris Roetter and Madison Stolzer as replacements for the lost members and changed their name to Emarosa.

[5] Jordan Stewart (keyboardist) and Lukas Koszewski (drummer) were interviewed in which they referred to the problems regarding Jonny Craig and the transitions: "In the beginning it was pretty intense.

On January 26, 2008, Emarosa posted their first official song with Jonny Craig titled, "New Demo" (now known to be "Set It Off Like Napalm").

Jerry Roush, formerly of Sky Eats Airplane and Of Mice & Men, makes an appearance stating he's the new screamer for Emarosa but is joking the entire interview.

Emarosa toured with A Skylit Drive, Sky Eats Airplane, and Breathe Carolina the entire month of July.

June 19 – August 1, 2009, Emarosa headlined The Artery Foundation Across the Nation Tour supported by I See Stars, Our Last Night, In Fear and Faith, Burden of a Day, and Broadway.

Shrednews said "Emarosa have taken this album to a higher level, with more complex and animated guitar riffs, and pounding drum beats that you will make you headbang without even realizing it.

"[12] Craig stated that the band would be traveling to Portland after his solo tour to record a B-side for the self-titled album.

So far Cody Anderson (formerly of In Fear and Faith), Chris Roetter (of Like Moths to Flames, formerly Emarosa and Agraceful, who actually wrote the song), Austin Carlile, Jon Mess (of Dance Gavin Dance), Kyle Tamosaitis (formerly of Burden of a Day), Chris Moore, and Jerry Roush have performed this song alongside the band.

[14][15] On February 27, 2011, Alternative Press broke the news that Craig had turned himself into detox, stemming from reports of Twitter scams and from a longtime addiction.

On March 28, 2014, the band posted a new video that featured studio interviews and a new song preview, announcing that the new album would be titled Versus.

[29] On September 19, during an interview with Alternative Press, frontman Bradley Walden finally gave the statement of the departure of members Lukas Koszewski (drums, percussion) and Jonas Ladekjaer (rhythm guitar, backing vocals), with them saying that Koszewski left to pursue a modeling career and Ladekjaer left to go back to school.

On October 17, 2018, Emarosa announced their fifth studio album, Peach Club, which was released on February 8, 2019, via Hopeless Records.

On March 25, 2019, it was announced that Emarosa would embark on the third leg of 'The Midnight World Tour' alongside Set It Off, Broadside, and later Selfish Things.

[35] On July 1, 2020, the band were reportedly dropped from their label, Hopeless Records, and by their management, Roc Nation, following allegations of sexual misconduct that surfaced against vocalist, Bradley Walden.

[37] On March 9, 2021, the band announced on social media that they are working on new material for their upcoming sixth studio album.