Katy Perry has revealed why she hasn't been able to perform at her best after kicking off her "Lifetimes" tour on Wednesday ...

She is now facing scrutiny on her tour, as she struggles to sell tickets for her US dates which kick off in Houston, Texas , ...

Katy Perry isn’t letting critics dim her cosmic glow. Fresh off her April 14 space flight with an all-women crew on Blue ...

billboard hot 100™ the week’s most popular current songs across all genres, ranked by streaming activity from digital music sources tracked by luminate, radio airplay audience impressions as ...

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