Karen Briggs played with composer and keyboardist Yanni for more than a decade, and appeared on his best-selling "Live at the Acropolis" album. Briggs has also added her violin to symphony orchestras, Latin music, and even hip hop. She’s recorded with Wu Tang Clan, for instance. This weekend she’ll be in Charlotte as part of the Queen City Jazz Fest. We reached her by phone at home in North Hollywood.