General · EdgepediaSeptember 17, 20265 min read

Black Midi

Black Midi (stylised black midi) were an English experimental rock band from London, formed in 2017, whose sound combined post-punk, math rock, jazz fusion, and progressive rock. The band consisted of Geordie Greep (guitar, vocals), Cameron Picton (bass, vocals), and Morgan Simpson (drums), with founding guitarist Matt Kwasniewski-Kelvin appearing on their 2019 debut album before leaving the group in early 2021.¹ They released three albums on Rough Trade, Schlagenheim (2019), Cavalcade (2021), and Hellfire (2022), before going on indefinite hiatus in August 2024.²

Key fact	Detail
Origin	Formed 2017 in London; members met at the BRIT School for Performing Arts and Technology in Croydon¹
Members	Geordie Greep (guitar, vocals), Cameron Picton (bass, vocals), Morgan Simpson (drums); founding guitarist Matt Kwasniewski-Kelvin left in January 2021¹^•²
Albums	Schlagenheim (2019), Cavalcade (2021), Hellfire (2022), all on Rough Trade²
Recognition	Schlagenheim was shortlisted for the 2019 Mercury Prize¹
Genres	Math rock, experimental rock, post-punk, alternative/indie rock³
Scene	Central band of the "Windmill scene" around The Windmill in Brixton, alongside Black Country New Road, Squid, and Fontaines D.C.¹
Status	On indefinite hiatus since August 2024²

Name and formation

The name refers to black MIDI, described in the band's press bio as "a Japanese music genre where a MIDI file is stuffed with so many musical notes that its visual representation looks solid black"⁴.

The four members met at the BRIT School for Performing Arts and Technology in Croydon. Guitarist Matt Kwasniewski-Kelvin, multi-instrumentalist Geordie Greep, and drummer Morgan Simpson founded the band in 2017, with bassist Cameron Picton completing the line-up shortly afterward¹. Their first performance together was a cover of Neu!'s "Hero" at the BRIT School⁵, and they played their first show at The Windmill in Brixton in June 2017, becoming staples of the venue and of what became known as the Windmill scene¹.

Improvisation as method. Greep and Simpson both learned to improvise in church bands, and the group's rehearsal process was built on long free-form jams, sometimes swapping instruments mid-performance⁵. Cited influences ranged from rapper Danny Brown and the jazz fusion group Mahavishnu Orchestra to Congolese soukous².

Breakthrough

In 2018 the band recorded their first video, a live session for internet radio station NTS, and released the debut single "bmbmbm" on Speedy Wunderground, a label run by producer Dan Carey¹. In November 2018 they performed five songs from an upcoming album at a Reykjavik show, released by KEXP, and the video spread widely online among listeners of math rock, no wave, and post-punk¹^•⁶. After signing to Rough Trade in January, the band recorded their debut with Carey¹.

Albums

Schlagenheim (2019). The debut combined noise-rock heft with nuanced instrumentation and Simpson's rapid, unpredictable rhythms². It was released to critical acclaim and shortlisted for the 2019 Mercury Prize¹. Reviewers heard echoes of The Fall, Touch and Go post-hardcore, 1970s Miles Davis, and 1980s King Crimson, delivered with free onstage improvisation⁷. The song "Near DT, MI", sung by Picton, alluded to the Flint water crisis in Michigan⁶.

Cavalcade (2021). After Kwasniewski-Kelvin departed in January 2021 to focus on his mental health¹, the trio expanded in every direction: Pitchfork described the album as "pinballing between metal scherzos, political screeds, cabaret waltzes, and baroque-rock"². AllMusic's review noted that feral playing, willful dissonance, and lyrics about an eroding socioeconomic landscape placed the band in a post-punk bracket, while arguing that label alone undersold them³. Touring members Kaidi Akinnibi and Seth Evans filled the departed guitarist's role in the band's live lineup⁸.

Hellfire (2022). The third album further streamlined the band's high-drama, showtune-style rock, turning Greep and Picton's absurdist lyrical concerns into interlinking stories, including a soldier named Tristan Bongo in "Welcome to Hell" and a preening actor named Freddie Frost in the closer "27 Questions"²^•⁹. Critics placed the record between "unhinged madness and art rock precision"¹⁰.

Windmill scene context

Black Midi were a front-runner of a wave of experimental British bands that emerged in the late 2010s, alongside Black Country New Road, Squid, Shame, and Fontaines D.C.¹ Writers covering the scene grouped these bands under the post-punk label, and academic commentary has noted that Black Country New Road, Black Midi, and Squid were described as the leading groups of the current British post-punk scene, even as their own records moved toward progressive rock, metal, and theatrical songwriting¹¹.

Hiatus and aftermath

In August 2024, Greep said in an Instagram Live session that "black midi was an interesting band that's indefinitely over"; Picton wrote that the band had agreed not to say anything about breaking up, and a representative confirmed the band were on hiatus while working on solo projects². AP News subsequently described the band as having disbanded in August¹². Their final release to date was the live album Live Fire, capturing a festival show in Portugal².

The members have continued with solo and session work. Greep released the solo album The New Sound in 2024¹²; Picton released a debut as My New Band Believe, praised for bringing post-punk's "twitching" rhythms into arrangements with strings, horns, and flamenco-style guitar¹³; and Simpson has worked with Little Simz¹⁴.

In January 2026, Rough Trade announced that Matt Kwasniewski-Kelvin had died at 26 after what his family described as a long battle with his mental health¹. Guitar World described him as the "six-string foil" to Greep, playing brighter Telecaster tones against Greep's baritone guitar, and noted that he appeared only on Schlagenheim¹⁵.

References

Topic: Encyclopedia › Arts and culture › Music › Musicians and ensembles › Ensembles and groups › Rock, pop, and metal bands › Rock, indie, and pop groups › Indie and alternative bands › Noise and experimental rock bands

Initially written Sep 17, 2026 · Reviewed: Sep 30, 2026; Oct 25, 2026 · Edited: Sep 30, 2026; Oct 25, 2026 · Last review: Oct 25, 2026

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