Michael Bolton follows up his Optimum campaign with a cameo in the Starburst ad below, part of a new campaign from DDB Chicago that offers theories on why the candy is so "Unexplainably juicy." In "Orchard," it's because Bolton serenades trees whose fruit then becomes extra luscious, obviously. Another spot says it has something to do with Keyboard Cat and dragon tears. The spots were directed by Andy McLeod of Rattling Stick. More executions and credits below.