JOSH GROBAN RETURNS TO THE ROAD FOR SUMMER 2016 TOUR WITH JUST ANNOUNCED SPECIAL GUEST FOY VANCE AND PREVIOUSLY ANNOUNCED GUEST SARAH MCLACHLAN Summer Amphitheatre Tour Kicks Off On July 15 th and Visits Over 20 Cities Nationwide Los Angeles, CA - Multi-platinum recording artist Josh Groban will return to the road this summer for the next leg of his worldwide tour in support of his gold-certified album Stages - a collection of some of the greatest musical theater songs of all