Black Midi (stylised in all lowercase) are an English rock band from London, formed in 2017. The band consists of Geordie Greep (vocals, guitar), Matt Kwasniewski-Kelvin (vocals, guitar), Cameron Picton (vocals, bass guitar, synths) and Morgan Simpson (drums). Their name is derived from the Japanese music genre black MIDI, though their own music has no relation to it. Their sound has been described as experimental rock, math rock, progressive rock, noise rock and post-punk.
The band began on producer Dan Carey's record label Speedy Wunderground, through which they released their debut single "bmbmbm" in 2018. They released their debut studio album Schlagenheim, produced by Carey, on 21 June 2019, through Rough Trade Records. It received critical acclaim, entered the top 50 of the UK Albums Chart, and was nominated for the 2019 Mercury Prize. An anthology album including several recorded jams and spoken word tracks, The Black Midi Anthology Vol. 1: Tales of Suspense and Revenge, was released on 5 June 2020 exclusively to Bandcamp. The band's second studio album, Cavalcade, was released on 26 May 2021.