Astonishingly, 23 years have passed since Glenn Underground and Boo Williams established the Strictly Jaz Unit project, a fluid collective of underground Chicago deep house producers. These days, SJU mainly operates as a duo, and it was this stripped-back line-up that produced "The Tempest", a rare album-length outing bristling with quality cuts. As a whole, the album is far more intergalactic, electronic and sci-fi sounding than either man's solo productions, with just a few hints of the luscious instrumentation and swinging grooves associated with their previous work. There's no dip in quality, though, with the dubbed-out deep house hypnotism of "Heard Syndrome", the Patrick Cowley/Giorgio Moroder influenced "The Struggle", the Chicago-goes-Yorkshire bleep flex of "Time of Speed, Not Day" and acid-fired gorgeousness of "The Flat (London Projects)" standing out.