Sound on Sound

One of the prime architects of the organic grooves later dubbed trip-hop, Nightmares on Wax deserted their early formula in 2002 only when it became respectable and a crossover appeared most likely. With the air cleared of downtempo cash-ins, producer George Evelyn and producer/keyboardist Robin Taylor-Firth went right back to dub-heavy trip-hop with In a Space Outta Sound. Unsurprisingly, Nightmares on Wax remain among the best at constructing simple grooves with endless depths; their only rival is Massive Attack. The centerpiece is "Damn," seven and a half minutes of gently undulating hip-hop courtesy of a reedy Al Hirt sample (familiar from its use by De La Soul) that eventually flowers into an R&B jam with a gospel choir…