“Summer is Over,” Case had sung as the night grew its coldest, warning us that the warmest of days are behind us. In many ways, the final concert of the Red Butte Concert Series did indeed harken the end of summer. The air is steadily cooling and the outdoor venues are steadily closing. The Twilight series has ended and USANA Amphitheater will close its doors for the season on Friday. I can’t think of a better way to welcome the sweet autumn air than with Neko Case.