More than 280 million digital tracks were sold in the first quarter, outpacing album sales by more than 100 million units, says Reuters. By the end of the quarter, digital track sales were up 51.9 percent, and digital album sales, which total 11.5 million units, were up 56 percent.

Within specific genres, Rock had a good quarter, as it was responsible for nearly 30 percent of all U.S. album sales. Rap and R&B had the largest genre decline, as sales fell 33.6 percent to 10.9 million from the 16.5 million units the genre tallied in the beginning of 2006. [see full story for all the gory details]
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