John Mellencamp gave fans a sneak peek at what to expect from his upcoming Dancing Words Tour. The rocker invited fans to an open rehearsal at the Ford Center in Evansville, Indiana, on Wednesday. As promised when he announced the tour, he broke out some songs he hasn't played in a very long time. According to setlist.fm, some of those songs included "R.O.C.K. in the U.S.A. (A Salute to 60's Rock)," which he hadn't played since 2015; "Love and H…