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Sergio Assad is widely celebrated for the classical guitar duo he has with his brother Odair; they’ve won a Grammy together, released a series of acclaimed albums for Nonesuch, dabbled in a variety of nonclassical styles, and performed all over the globe. They seem to play locally as often as they play anywhere in the world these days, a fortunate byproduct of Sergio’s marriage to Angela Olinta, a professor at the University of Chicago; he lives here. Tonight the Assads lead an interesting program of Brazilian music at Pick-Staiger Concert Hall on the campus of Northwestern University to kick off the school’s 2008 Segovia Classical Guitar series. Their sister Badi, an accomplished and inventive guitarist, singer, and interpreter of the bossa nova, is also on the bill, but it’s the presence of two other Brazilian guitarists that most piques my interest.

Various Artists, South Side Soul Survey (Soulscape)Francisco Lopez, Untitled #164 (Unsounds)Bud Freeman, 1939-1940 (Chronological Classics)Strawbs, From the Witchwood ( A&M)Eduardo Mateo, Mateo Solo Bien Se Lame (Lion Productions)