Clear Channel Outdoor ignites the July 4th celebrations with first nationwide digital billboard Display of "The Star-Spangled Banner".

By uniting the billboard displays to create a complete version of the anthem, the film brought people together across the country in the "singing" of their anthem on the most important national holiday of the year.

Clear Channel Outdoor used its digital billboards across the U.S. to execute this cross-country national salute to Independence Day. Rallying its own reps to shoot the lyric fragments in 37 regional markets the week previous, Clear Channel Outdoor then launched a short film synched to the billboard displays the same day as the live stunt, on YouTube and on united4th.com, the campaign landing page.

On united4th.com, people were also invited to share their July 4th with #united4th; clips posted were edited into new anthem films, and re-posted online; select photo posts were fed back onto the very same billboards.

Clear Channel used its iHeart Radio network to push listeners to the website and drive engagement. The United 4th campaign was also promoted through the website and Facebook page of Ingrid Michaelson, the artist who sings the anthem in the short film, a version created specifically for the campaign.

The United 4th campaign demonstrated the immediacy and enduring relevance of outdoor in a digital age, inspiring a national conversation about outdoor advertising amongst advertisers as well as consumers. Over the holiday weekend, we earned 5.7 million impressions through national media coverage, in everything from The Wall Street Journal to Mashable.

By capitalizing on a day when Americans want to feel connected, Clear Channel Outdoor was able to rally messaging across diverse media to embrace the individualism within our markets, while uniting the country around a theme that resonates nationwide: Independence Day.