Headlining the Rikstock stage is tech metallers Core of iO, who was born out of a shared enjoyment of technical and melodically intriguing music. Ever since 2014, the four-piece have established themselves on the underground scene, displaying an honest and unapologetically raw sound with their tech flavoured progressive rock. Core of iO are no strangers to hard work, the quartet have already released two EPs to date, as well as a dual single, which landed in 2014. The band have also played Mammothfest in the past and UK Tech-Fest, whilst touring the UK extensively and racking over 250 shows.

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