Back catalogue: Progressive House

Review: Belarusian producer Four Walls is back - this time around he finds himself on the new Ultraworld Records imprint from DJ Craft. This one kicks off with the lush prog house and silky synth arps of 'Mind Charger' which soon takes you to the stars. 'Metamorphosis' is a more raw-edged and acid-laced techno stomper for peak time action and 'Summer Nights' is a bubbling, elastic tapestry of new age overtones, thudding kicks, and trance-tinged pads. A remix by Toronto-based Pletnev adds another dimension to this club-ready EP.

Review: Scopic Records - a new UK label which aims to "bring newcomers and artists with backgrounds, regardless of their background or gender" - launches with a single by its founder New Digital Fidelity in collaboration with singer Monet. We get three nicely different mixes of 'Getting Colder' in all. The A-side is taken up by the club mix, a classic New York deep house groove with chunky pianos chords and Monet's confident vocal performance. The flip begins with the original, a slower version but still effortlessly groovy, bringing its soul, jazz, and R&B influences to the fore. US techno's man of the moment Byron the Aquarius completes the set by turning the track inside out with shuffling hats, snapping machinefunk snares and a bubbling bass, making it even more impressive by exposing its moving parts and giving them a neat polish.

Review: The fledgling but already notable UFO Series now looks to Italian producer and prodigious underground innovator Riciar Ghir for a captivating journey through the more energetic house realms, all with an outer space feel. 'Niriba Shuttle' opens with tribal percussion and progressive synths that are coloured by subtle acid lines. 'Silenzio' is slow, heavy and persuasive with its old school piano acting lighting up your soul. There's a twisted tech funk to 'Platter Dreams' that makes it perfect for 2am cruising and 'Bad Egg' sets down with plenty of colour. These cuts will all work several different moments on the dance floor making it a hugely useful 12".

Review: Since debuting a decade ago, Sleep D has refused to settle on one specific style or sub-genre, though in recent years the duo seems to have settled on a sound that prioritises hallucinatory, TB-303-driven sounds, weighty techno grooves and nods towards mid-90s ambient techno. These elements are much in evidence on the Australian outfit's latest EP, though there are also audible nods to neo-trance and the formative years of the psy-trance movement. They first join forces with Ivy Barkakati and Furious Frank on the constantly rising, mind-altering neo-trance throb of 'Border Control (Ahora Si)', before reaching for seriously trippy electronic motifs, creepy chords, metallic-sounding electronic bass and sturdy house beats on 'Post Pump'. Closing cut 'Bass'd in Berlin', meanwhile, immerses us in ambient electronics and mutilated choral samples before introducing a seriously pulsating, trance-style groove.