Harmony Festival | 48 followers on LinkedIn. The West Coast's premier outdoor music and healthy living festival occurs annually the second weekend (Fri-Sun) of June and now attracts 35,000+ guests and 700+ vendors. Over the past 5 years Harmony expanded into a major music festival and in 2009-10, Harmony added the Eco Rally Action Sports Skate Zone to attract a younger demographic. In 2008, Harmony Festival celebrated its landmark 30th Anniversary with Damian Marley as the headliner.