OAKLAND, Calif., Oct. 29, 2012 /PRNewswire/ -- Pandora (NYSE: P), the leading internet radio service, today announced ratings from the September 2012 Triton Webcast Metrics report that reveal continued average quarter hour (AQH) and cumulative audience (cume) growth nationally and in the top local U.S. radio markets. (Logo: http://photos.prnewswire.com/prnh/20110615/SF20192LOGO) The September 2012 Triton Webcast Metrics national ratings show that among the adult 18-49 demographic, Pandora has a weekly cume of 26,855,438. This represents a 6% increase from the June 2012 Triton Webcast Metrics weekly cume of 25,333,249, when Pandora reported that it ranks as the largest adult 18-49 radio network in the U.S. when compared to radio networks in the Arbitron June 2012 RADAR 113 report. In the top local radio markets, Pandora saw cume growth in the adult 18-34, 18-49 and 25-54 demographics in the September 2012 Triton Webcast Metrics, meaning that the number of different (unduplicated) individuals tuning to Pandora from Monday-Sunday, 6:00 a.m. to midnight in an average week continues to grow. In the 18-34 demographic, the September 2012 Triton Webcast Metrics showed that Pandora averaged a 1.2 AQH rating in the top local U.S. radio markets, including New York and Los Angeles. At any given moment during the measured time period, an average of 1.2 percent of a target population is listening to Pandora. The September 2012 Triton Webcast Metrics local report can be found at: (INFO: http://photos.prnewswire.com/prnh/20121029/SF01651-INFO) Pandora Chief Revenue Officer John Trimble said, "Triton's metrics have been instrumental in helping the radio advertising community finally understand the tremendous scale of Pandora. Pandora is now the largest radio station in most major markets across the U.S., across every demographic. And as our audience has grown, we have developed a unique portfolio of advertising products - graphic, audio and video - that truly leverages the platform." The September 2012 Triton Webcast Metrics are based on listener data from August 16, 2012 through September 12, 2012 for key radio buying demos, including adults 18-34, 18-49 and 25-54, Monday-Sunday 6:00 a.m. – midnight. To learn more about Triton Webcast Metrics, please visit: www.tritondigital.com/Media/Default/Rankers/WCM-Local-Data-Specifications.pdfABOUT PANDORA Pandora (NYSE: P) gives people music and comedy they love anytime, anywhere, through connected devices. Personalized stations launch instantly with the input of a single "seed" - a favorite artist, song or genre. The Music Genome Project®, a deeply detailed hand-built musical taxonomy, powers the personalization of Pandora® internet radio by using musicological "DNA" and constant listener feedback to craft personalized stations from a growing collection of hundreds of thousands of recordings. Tens of millions of people turn on Pandora every month to hear music they love. www.pandora.com SOURCE Pandora Media, Inc.