Malibu LifePeopleMarty and Anna GrebbBy 13StarsManager - June 5, 20150391FacebookTwitterPinterestWhatsApp Anna Grebb sings on stage with her father Marty during a star-studded benefit concert and fundraiser to help support Marty after a cancer diagnosis.Share this: Click to share on Facebook (Opens in new window) Facebook Click to share on X (Opens in new window) X Like this:Like Loading...Related