Katy Perry surprises Rebecca Black with an on-stage tour invite for 'The Lifetimes Tour.' Fans can expect sci-fi visuals, ...

Katy Perry teamed up with Rebecca Black to perform 'Last Friday Night (T.G.I.F.)' and invited her on the Lifetimes Tour.

Carrie Underwood is making her "American Idol" judging debut tonight. Here’s what to know about her journey on the show—and ...

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

Maryland-via-UK rock band Teen Mortgage are a duo who take influence from the satanic panic of the ’80s. Their debut album ...