Duke Robillard and Ronnie Earl are among blues guitar's hottest pistols, but their first studio union is no showdown. Although Robillard is steeped in all aspects of technique and Earl is a pure "soul" player, their styles overlap in the Texas and Chicago schools, which grant both giants plenty of space for elegant and biting single-note solos, daredevil string-bending, and chugging rhythms. Robillard sings two numbers and "Mighty" Sam McClain, whose red-clay voice is the perfect foil for their emotional fretwork, guests on Earl's heartbroken epic "A Soul That's Been Abused." The real mojo, however, is in the instrumentals, where these virtuosos who emerged from the New England scene to achieve worldwide acclaim maintain a beatific dialogue. They both swing like T-Bone Walker on "Two Bones and a Pick" and trade sliding chords and slide guitar licks on "Zeb's Thing," which dips into down-home Mississippi grit. The highlight is "My Tears," on which Robillard sings sad and dirty, Earl turns sustained notes into Zen koans, and both players stretch their flair for dynamics and brilliant, unhurried, lyrical playing to its limit. Fans of blues guitar need to hear this album. --Ted Drozdowski