Pandora streaming will now be calculated in the Billboard charts. Today (Jan. 30), Billboard and Pandora announced an exclusive agreement that will add Pandora's streaming data to the weekly charts. The first charts with Pandora data included are set to be unveiled on Tuesday (Jan. 31) for charts dated Feb. 11.

"We're thrilled to bring Pandora aboard as a contributor to our songs charts," Silvio Pietroluongo, the VP of Charts and Data Development for Billboard, said. "The music tastes and listening habits of Pandora's large and influential user base is something that we've longed to include as a measure of song popularity in the Hot 100 and various other Billboard charts."

The addition of Pandora already resulted in some dramatic improvement for a few songs. Rob $tone's breakthrough single "Chill Bill" will climb 10 spots on the Billboard Hot 100 thanks to the new data from Pandora.

"Over the last few years, Pandora has shared more and more data with the music industry," Pandora Founder and CEO Tim Westergren said. "We started with artists and managers, then direct deal label partners, and now Billboard for inclusion in the iconic Hot 100 chart. With each step along the way our partners have been shocked by the sheer size of Pandora's audience. Pandora is now the #1 radio station in 87 U.S. markets and represents roughly 10 percent of all radio listening. With the inclusion of Pandora data, the Billboard charts that have guided listeners and been so central to the music industry for decades now reflect a truer measure of a song's popularity today. I'm thrilled that the 'Pandora effect' will now be formally recognized in the industry's gold standard for measurement."

Pandora's data joins a mix of programmed streaming services that includes Slacker, Google Radio, Napster and AOL Radio. On-demand streaming services like Spotify, Apple Music and YouTube are weighted higher in the weekly chart calculations.

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