Agile Experiments’ vinyl-only releases emphasise the Dave De Rose’s collective’s ethos since their 2015 start, fiercely improvising to curious Brixton Market passersby. The LP format requires attentiveness to the moment, as do this amorphous group’s no-quarter, one-hour sessions, which have expanded as far as Athens, and here blast a space at Hackney’s Empire Bar during last year’s London Jazz Festival. This is rhythm section music, with John Edwards’ double-bass taking the forceful lead with jogging, tiptoe runs, and joining De Rose in haunted dancehall dubstep inflected with artfully dodging jazz moves. ‘Alive II’ is an Afro-funk explosion, with a core kept in unsteady forward motion as George Crowley adds astringent sax textures, and Dan Nicholls’ electronics spin a centrifugal whirl. ‘Alive IV’ builds an intensifying, expanding atmosphere from Edwards’ ringing plucks and flutters, while Crowley floats into sometimes lyrical, sometimes restive and railing thoughts, a flighty wanderer in a place where bass is king. ‘Alive VI’ finds introspective, slow space cathedral organ meeting skittering, double-speed jungle drums. By the closing ‘Alive VII’ we’re lost in space, heading into Disney’s 1979 movie The Black Hole with Geiger-counter crackle. All the while, you can sense the audience in the place and time the band have corralled, a London night of mentally intense creation.