the primary theme of the tour, Bono said, "I can’t quite recall how it got to the idea of taking a supermarket on the road...I remember it making a lot of sense at the time. As I’m sitting here, I’m trying to think what that [reason] is." It was announced that the beginning of the PopMart Tour was to feature stadium shows in 66 cities throughout North America and Europe, beginning in Whitney, Nevada, on 25 April, and ending in Seattle, Washington, on 12 December. They would tour an additional 12 cities in 1998 throughout Africa, Asia, Australia, and South America. Tickets went on sale for the announced dates several days after the tour's announcement, and were priced at an average of $50 worldwide. Due to the lack of sponsors for the tour, ticket prices were almost 50% higher for this tour than Zoo TV. In markets where the average income was low, tickets were sold for a lower price, which was enough for the band to break even and not lose any money in the process. Before the tour, various markets distributed singles to promote ticket sales. A double 12-inch single of U2 remixes was distributed in Canada, and a CD single of various songs taken from U2's studio albums was released by a radio station in Mexico. In Europe, U2's remix of "Pop Muzik" used to open the PopMart shows, was released as a single on both 12-inch and CD formats. While the first single from Pop, "Discothèque", was released in January 1997, "Staring at the Sun" became the second single from the album, and was released in April 1997 to coincide with the beginning of the tour. On 26 April 1997, American television network ABC aired a one-hour prime time special about Pop and the PopMart Tour, titled U2: A Year in Pop. Narrated by actor Dennis Hopper, the documentary featured footage from the Pop recording sessions, as well as live footage from the opening PopMart show in Whitney, which took place the night before. The program received poor reception, ranking at 101 out of 107 programs aired that week, according to Nielsen ratings, and became the lowest rated non-political documentary in the history of the ABC network. Despite the low ratings, McGuinness appreciated the opportunity for the band to appear on network television in the first place, stating that the small audience for the television special