Coke is partnering on the effort with BuzzMedia's music-focused blogs Buzznet, Stereogum and Absolute Punk. The SoundsofBuzz.com site, which will be up through Oct. 31, features ample Coke branding throughout. As part of the broader campaign, Coke and BuzzMedia sponsored Katy Perry's recent show at the Hollywood Palladium in Los Angeles. The full concert is now available at the Sounds of Buzz site. --Mark Walsh