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Combining elements of Big Band and symphonic music into its eclectic world-music mix, Orchestra Infinity is aptly named in that it stretches the boundaries of all of these forms. This special World Music Festival appearance includes the American premiere of “Nu Art Claiming Earth,” an orchestral suite composed by the ensemble’s conductor, Kahil El’Zabar and a co-commission with Bordeaux, France that attempts to integrate East and West, including the legacy of the “Chicago sound” style of jazz as well as African, Middle Eastern and Indian elements. Ten French musicians of various cultures from across the Bordeaux region will be guest artists, along with twenty Chicago jazzers and twenty Chicago students.(Dennis Polkow)

September 21 at Pritzker Pavilion.