Clear Channel Billboards Across the U.S. Will Sing the National Anthem on July 4

From Albuquerque to Portland, digital billboards all over the United States will each light up with one line from "The Star Spangled Banner," in a campaign by Clear Channel that is part of the outdoor giant's "United 4th" 

Link de la noticia: 
http://adage.com/article/creativity-pick-of-the-day/clear-channel-billboards-u-s...