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Fever 333


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California hardcore punks with a reputation for political activism and unrivalled energy on stage


Often compared to Linkin Park, Bring Me The Horizon and Rage Against The Machine, the raucous three-piece FEVER 333 is comprised of vocalist Jason Aalon Butler, guitarist Stephen Harrison and drummer Aric Improta – formerly of the bands letlive., The Chariot and Night Verses, respectively. The 333 in their name represents a focus on community, charity and change.

They formed in 2017 with the calling of “art as activism” and shortly after performed an impromptu debut pop-up show from a U-Haul truck in the carpark of Inglewood’s flagship Randy's Donuts on the 4th of July. Later that summer FEVER 333 released their debut single We’re Coming In, followed by Hunting Season – both co-written and co-produced with support from blink-182’s Travis Barker and Goldfinger’s John Feldman.

The band’s hybrid rap-rock sound with pointedly political lyrics quickly took shape, as did their socially conscious spirit and penchant for unpermitted D333MONSTRATIONs after publicly assembling in front of a South Central Los Angeles landmark and ducking out before the cops came.

In 2018, FEVER 333 released their debut EP MADE AN AMERICA, which would go on to score them a Grammy nomination for Best Rock Performance. The trio also made their UK live debut at Download Festival that year.

Their first full-length album STRENGTH IN NUMB333RS came out in January 2019. In addition to summer festival appearances at Reading & Leeds, Download, AfroPunk and many more, FEVER 333 took the world by storm later that year with their global D333MONSTRATIONS tour.

FEVER 333 unveiled the explosive single BITE BACK ahead of their EP WRONG GENERATION in 2020. Written in the wake of the George Floyd killing, Butler spent 13 days in the streets marching before coming home to write this collection of songs. To mark the release, FEVER 333 played a global live-stream tour, with a series of six consecutive performances, each broadcasting live in different time zones. 

In summer 2021, FEVER 333 announced that in addition to playing at Reading & Leeds that August, they would perform a pair of shows at London’s O2 Academy Islington on 30 – 31 August 2021.


FEVER 333 add second London date

FEVER 333 add second London date

Due to demand, the SoCal three-piece will play an extra show at O2 Academy Islington on Tuesday 31 August 2021. Tickets are on sale now.

FEVER 333 announce London date

FEVER 333 announce London date

The California trio will play a special show on Monday 30 August 2021 at O2 Academy Islington. Tickets go on sale from 10:00 on Monday 2 August 2021.


FEVER 333 are appearing at Reading & Leeds 2021 and playing a pair of special shows in London on 30 & 31 August 2021.

FEVER 333 are in the line-up for Reading & Leeds festivals plus they will be play two concerts at O2 Academy Islington in London in 2021.

Tickets for FEVER 333’s London tour dates are on sale now.