Digital album sales are experiencing a "sustained decline" for the first time, Billboard reports. An analysis of Nielsen"s Soundscan data reveals that after seven years of growth, digital albums have shrunk for three straight quarters. Sales this year were down 5 percent in the first quarter, 7 percent in the second quarter and 3 percent in the third quarter. Analyst Glen Peoples notes that albums from albums from Taylor Swift, Kanye West and Keith Urban may lead to a turnaround in the fourth quarter. "These trends show the download market has become mature," he said. "Growth is now harder to come by. This trend should put extra pressure on record labels and publishers to speed the arrival of next-generation products and services."