In 2002 they recorded the self-released demo “.357” that led to mass positive reviews and reactions which ultimately led to the quintet inking a deal with Willowtip Records in 2003 and recording their debut LP “Breathing Is Irrelevant” (2003).After playing in nearly every corners of North America over the period of 2004 and 2005 in support of their first Full length, they secured a solid fan base leading to the inking of a new record deal with Century Media/Abacus Records and to the follow up record, “Solace” (2005). With this new effort they then set the bar even higher with a new level of heaviness, complex and chaotic sound that got them described as “mathcore” and became a reference along with pioneer The Dillinger Escape Plan, Meshuggah and Botch.
In June 2006, the bands vocalist (Gabriel McCaughry) announced that he was leaving the band due to personal reasons paving the way for longtime friend Kevin McCaughey. With the arrival of Kevin in late 2006, Ion Dissonance went back into the studio and recruited veteran sound engineer Zeuss (Hatebreed, Shadows Fall, The Acacia Strain) to take the bands trademark sound to a whole new level. Artist Paul Romano (Mastodon, The Acacia Strain) was also summoned to create the artwork for the follow up record “Minus the herd” (2007). The band then came together to create their fourth full length “Cursed” (2010), an album inspired by their personal struggles as a band determined to break the mold of the generic standard in heavy music. The record was done by Antoine Lussier, the band’s guitar player, at helm of production for the effort.