Katy Perry's 2010 hit 'California Gurls' has joined the Spotify Billions Club after reaching one billion streams on the ...

But the biggest of her feuds? Spotify, and Katy Perry. And on Thursday night, the Cersei Lannister of Top 40 pop used one to go after the other. Taylor Swift's music is back on Spotify ...

Katy Perry’s 2011 song "Last Friday Night (T.G.I.F)" from her third studio album, Teenage Dream, has debuted on US Spotify.