** Carcass, “Heartwork,” Earache/Columbia. Has British grindcore...

** Carcass, “Heartwork,” Earache/Columbia. Has British grindcore band Carcass matured since its early death-metal songs such as “Feast on Dismembered Carnage”? The hyper-speed riffs and depths-of-hell vocals on “Heartwork” say no. But Carcass’ fourth record in nine years does take a slightly more melodic and accessible approach, though the lyrics are still as deliberately abstruse as the band’s dense musicality.

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