Ill Considered have pursued an underground course, releasing nine raw improvised albums – including a Christmas LP, natch – in three years. With new bassist Liran Donin (Led Bib and his own 1000 Boats project), Liminal Space is a studio leap forward, with the trio’s wild improv now the basis for added arrangements and musicians. Drummer Emre Ramazanoglu’s production simmers down thickly layered arrangements till star guests such as Theon Cross and Sarathy Korwar become mere ingredients in a multitudinous ferment; yet the sense of space is still sharply defined, like claustrophobic dub.

The global east and south inform an album whose steamy atmosphere is brewed from Indo-jazz, Ethio-jazz and Afrobeat, and whose narrative progress suggests a desert caravan advancing under furious attack, hi-hats shimmering like heat-haze. This is spiritual and visceral jazz. Idris Rahman’s sax offers the titular ‘Prayer’, his rueful rasp soaring against limits as percussion clatters like a besieging army, before a beseeching horn of Jericho blast. Rahman’s multi-reed arsenal, plus two guest saxophonists, in fact launches endless screaming assaults, recalling Louis Armstrong in their heedless thrill. Donin, meanwhile lays down a rubbery, bubbling tone, when not twanging dryly like a sitar or guitar. Ramazanoglu’s polyrhythms, sometimes on the Indian davul drum, Korwar’s tabla and further, metallic percussion add to the restless, purposeful clamour. Tamar Osborn’s flute flies breezily free through the 1970s spiritual blaxploitation funk melee of ‘Loosed’, and there is restful contemplation, too, in the balmy oasis of opener ‘Pearls’.

Ramazanoglu’s vast engineering and mixing CV includes Noel Gallagher’s most experimental album, a till-now underused resource which has deepened Ill Considered’s improv heat, adding barely perceived mystery and softly painted instrumental colours. This is exotica perhaps perceived from the inside by its makers, a seething mood piece that goes for the burn.