While the fundraising results of Blake Shelton and NBC's efforts to raise funds for Oklahoma following the May 20 tornado remain to be seen, the overnight TV ratings show plenty of promise. According to Nielsen, Wednesday's Healing in the Heartland: Relief Benefit Concert, which was organized in just a few days, topped viewership for the night with 8.6 million viewers on NBC. It was the network's highest-rated program in its time slot since November 7, 2012.