Another in a series of undiluted blues-rock offerings from guitarist Walter Trout, Relentless, his 11th disc since 1990, doesn't offer any surprises. Released in conjunction with a DVD, the album was recorded live in the Netherlands club The Paradiso on a single day with little post-production sweetening or audience intervention. This results in a successful balance between sonics and concert sparks. For those who relish his by now standard brand of sturdy, guitar-heavy, Stevie Ray Vaughan-inspired music, Trout is in fine fret-shredding form here. But fans who'd like to see Trout swim in some new waters will find little of that on this outing.