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'Something From Nothing: The Art of Rap' -- 2 1/2 stars

R; 1:47 running time "Something From Nothing" is the opposite of a narrow-focus project such as "Beats, Rhymes & Life," last year's terrific chronicle of the reunion tour of A Tribe Called Quest. Tribe's Q-Tip shows up here too. It's a broad canvas, spanning the Bronx, Harlem, Manhattan