‘Flapper That’ sees Diagonal invite EVOL — arch propagators of computer music for hooligans — to their own, unique establishment for a proper headshrinker of a session. Since Diagonal’s incarnation, EVOL’s hardcore aesthetic and sense of absurdity have been a key influence on the label and a staple of Powell’s DJ sets. In effect, DIAG023 marks a knowing gurn of respect between these mutually advanced mentalists.The two-part, 20 minute ‘Flapper That’ may be EVOL’s most accessible boffin-style banger to date. The a-side writhes and morphs with hypernatural sensuality to explore sinuous integers of an acidic waveform, contorting convulsive digiteridooz into bendy, wild pitching bleeps and gabber-kick staccatos. The second side then smears the same battery tang timbre into a pulsating, viscous bass drone with brain-melting rave tones sustaining the intensity to a visceral degree.