iHeart And Commerce: The 2015 iHeartRadio Country Festival on NBC-TV last night (5/27) delivered 4.20 million viewers and a 1.0 rating/3 share, according to Zap2It.com. See the show in its entirety here. It placed fourth in its timeslot behind programming on CBS, ABC and FOX. NBC was fourth on the night after FOX, CBS and ABC. For comparison, ACM Presents: Superstar Duets attracted 4.97 million viewers to CBS earlier this month (CAT 5/18), posting a 0.3/1 share among Adults 18-49.