808 State’s 1988 debut Newbuild was the first great British acid house album. It was also the last significant work by the original short-lived Jine-up of Graham Massey, Martin Price and (A Guy Called) Gerald Simpson, whose enterprising exploitation of Roland’s 303 and 808 machines is the stuff of legend. Now Prebuild, a decent collection of recently unearthed studio, live, radio and demo recordings, sheds more light on that fertile period: there’s melody and magic aplenty in Simpson’s fluid bedroom sketches, and it seems criminal to have been denied the grimy liquid bliss of “Ride” for 16 years. Rave on (and on).