Boomkat Product Review:
"‘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 has been a key influence on the label and Powell’s DJ sets. In effect, 'Flapper That' 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 staccato. The second side then smears the same battery tang timbre into a pulsating, viscous bass drone with brain-melting rave tones sustaining the intensity at visceral degrees. Following the high acidic purity of EVOL’s ‘Purple Melters’ for iDEAL, this 12” is one of the strongest examples of utter rave indulgence in their extensive catalogue, and likewise a perfect addition to Diagonal’s ranks."