Oxford's Supergrass have relaxed into a comfortable sort of middle age, the youthful rush of their early albums replaced by a muscular, if somewhat conservative breed of rock'n'roll.Diamond Hoo Ha, however, shows their early mischief hasn't entirely deserted them. The opening "Diamond Hoo Ha Man" surfs out on a distinctly White Stripes riff, Danny Goffey's drums beating out a distinctly Meg-like pulse; Gaz Coombes' lyrics, meanwhile, rock out with tongue firmly planted in cheek: "When the sun goes down, I just can't resist… bite me!" Supergrass' sixth album continues along such playful lines: "Bad Blood" melds swooning melodies and gloomy lyrics ("Milk and honey!/Won't heal my heartache") to lolloping, upbeat glam riffs, "Rough Knuckles" gets surprisingly funky with some great keyboard work from fourth member Rob Coombes, and the hilarious "Whiskey & Green Tea" is a gonzoid rock number peppered with horns and lyrics about "being chased by Chinese dragons". The heartfelt "Ghost of a Friend", meanwhile, is a Dylan-tinged number that mourns the loss of an old acquaintance to the "vultures, peacocks and hounds"--a veiled diss at celebrity culture?--and throws some grand shapes towards the close.--Louis Pattison