Music sales in the U.S. are up 1.6 percent in 2011, according to The Nielsen Company, as digital album and track sales saw dramatic growth through May 8. Digital retailers received more than half of all music transactions, propelling a 12.4 percent growth in sales over last year.

A Nielsen analysis of a media use study conducted by the Council for Research Excellence (CRE) found that 77% of adults are reached by broadcast radio on a daily basis, second only to television at 95%.