New releases last four weeks: Deep Dubstep

Review: The connection between ZamZam and Feel Free Hi Fi was sparked by Bristolian Neek out in Portland and lead to an immediate bond forged over a shared sound and DIY ethos. Inspired by early digi-era dancehall and UK dub, the duo crafts a sound here that honours tradition while venturing into bold, idiosyncratic territory. It comes on their own Digital Sting label and opens with 'Voyageur' which is a mix of cinematic atmospherics with haunting synths that evoke wild and mythic landscapes. 'Underground' pays tribute to the spirit of DIY underground music and captures the struggle to preserve both nature and the essence of basement gigs in today's shifting cultural landscape.

Review: Liverpool Dubstep Heads invite Russian artist Ninety over for some low-end fun and these four tracks are the result of their adventures. As with many of his previous tracks, Ninety errs on the side of trippy across the EP with strange off-grid flurries and psychedelic twists throughout. Highlights include the wavey sheen and sparkle of 'Rouz', the pinched staccato drama of 'Fear Suppression' and the all-out theatrical tension of the title track. Hunt and go hard!

Review: The return of Sorrow, characteristically with a gracefully morose new six-tracker, 'Unrequited'. "How can I forgive?" goes the rheum-smeared vocal sample opening out the Bristolian artist's new opener 'Monologue', after which amnestic choral lines follow like heavenly flights, singing thee to thy rest. Many a temporal restretching of the 2-step grief-garage paradigm follow, as on the slo-mo dancehall of 'Fallen Angel', the pan-fluting, blossom treeing dubstep of 'Unrequited', and an unlikely future downtempo saudade, 'Hedron'. It's nice to hear Sorrow back in action; without his continued presence, we might otherwise drown our own in other, less musical liquids.

Review: Beatrice M's amusingly entitled Bait label has in fact become exactly that - very desirable to those who know. Its latest is a four tracker that serves as a taster of a forthcoming digital album by Trois-Quarts Taxi System. Behind the moniker is Eloi Petillon, a versatile producer, DJ and live act who has a knack for blurring genre lines. On this one, they mix up elements of dubstep, techno and d&b into soundscapes that are cerebral, hypnotic and psychedelic. Each one is made from futuristic sound design, field recordings and intricate polyrhythms: 'Metamorphism' warped, linear, deft and brilliant deep techno. 'Coma' is more busy, 'Fraction' has wispy synths and a sparse soundscape and 'Spectre' is a fizzy, skeletal sound that tickles the brain.