Witness

"In her 10 years with Capitol, she has racked up a cumulative 18+ billion streams alongside worldwide sales of more than 40+ million adjusted albums and 125+ million tracks. PRISM, her 2013 album, debuted at No. 1 in 100 countries and has sold more than 12.5 million adjusted albums worldwide. Katy is the first female artist to earn two RIAA Digital Single Diamond Awards. She is the most-followed person globally on Twitter.