Tickets are $25-$45 and can be purchased online at www.ums.org, over the phone by calling 734-764-2538, or in person at the Michigan League Ticket Office in Ann Arbor. Tickets go on sale Friday, November 16.

Mos Def is a hip-hop, rap, and spoken word artist and actor who represents the African American community through poetry and hip-hop. His infectious rhymes — infused with an acute social consciousness — reclaimed hip-hop's revolutionary soul, critiquing the violence and deceit found in "gangsta" rap and examining head-on the issues of the Black experience in the US. He has been presented by both the Lincoln Center American Songbook Series and the Brooklyn Academy of Music as an indication of the cultural significance of his work. For this concert, which will be presented only in Ann Arbor, he assembles his Big Band to pay tribute to Detroit's most influential and respected hip-hop producer, J Dilla, who died two years ago at age 32 from complications from lupus.

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