Support WBURCDC Recommends Hepatitis C Testing For All BoomersPlayDownload AudioJon HamiltonAugust 16, 2012 ShareGregg Allman and Natalie Cole perform at the Tune In to Hep C benefit concert at the Beacon Theatre in New York on July 27, 2011. Both singers have battled chronic hepatitis C. (AP Images for TuneInToHepC.com)