LOS ANGELES--(BUSINESS WIRE)--Award-winning singer, songwriter and multi-instrumentalist Hunter Hayes performed last evening at the Family’s Picnic in the Park at Grand Park LA for a private reception in support of the world’s largest sports and humanitarian event this year – the 2015 Special Olympics World Games (LA2015). The talented musician is the youngest male act ever to top the Billboard Hot Country Songs chart and has made waves in the music industry with the innovative streaming and di