Signature is a typically engaging unusual object from Charlie Musselwhite. The harpist runs through a set of modern blues, complete with jazz in addition to funk overtones -- indeed, there are two straight jazz instrumentals, "Catwalk" in addition to "What's New?," which showcase his surprising technique. Not only is Musselwhite in prognosticate form, his stripe is tight, soulful, in addition to sympathetic, making Signature a worthwhile listen for most blues fans. ...