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Recordings | Groups | Goals | Rules | How to enter | Contact Us | About Us | Publicity Photos Boston | Chicago | Los Angeles | New York | Pacific North West | San Francisco | Mid Atlantic (DC)Chris Brown is one of the most popular a cappella singers in the Chicagoland area. Best known as the baritone (aka “Blue Guy”) of the colorful Chicago-based classic rock quartet Ac•Rock, Chris has recorded eight a cappella albums and performed thousands of shows. Ac•Rock disbanded in 2017 after an amazing 24 year run. Today, Chris serves as the contemporary worship music director at Our Saviour’s Lutheran Church in Naperville, sings bass in The Caroling Party, and is the lead singer of the band Mixtape Junkies.