Katy Perry's 'Roar' Expected to Out-Sell Lady Gaga's 'Applause'

Both singers released new singles this week to combat leaks

katy perry roar washington dc
Bennett Raglin/WireImage
Katy Perry performs in Washington, DC.
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It looks like John Mayer was right when he said that Katy Perry's"Roar" would be a huge hit. According to Billboard, Perry's new single is set to sell 450,000 downloads by the end of the week, eclipsing the new single from fellow pop star Lady Gaga, whose "Applause" is expected to sell somewhere between 200,000 and 250,000 downloads. 

Both songs were released this week after leaking over the weekend. 

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Early indications on Monday suggested that each pop diva's song might sell more than 400,000 copies the first week. Perry's single has a slight advantage given that "Roar" was released on a Monday, and most singles aren't released until Tuesday, so "Roar" will get a full seven days of sales because the Nielsen SoundScan's tracking week runs from Monday through Sunday.

If "Roar" and "Applause" each succeed in selling more than 200,000 downloads this week, it will be the first time two songs have sold that many downloads in the debut week since last October when One Direction, Taylor Swift and Adele each surpassed the 200,000 mark.

Katy Perry's Prism is due out October 22nd and Lady Gaga's ARTPOP is set for release on November 11th.