Katy Perry performs onstage during "The Prismatic World Tour" at the Verizon Center on June 24, 2014 in Washington, DC.
Kevin Mazur—WireImage/Getty Images
By Samantha Grossman
August 5, 2014

At a loss for how to calm your baby down? Try blasting Katy Perry’s “Dark Horse” — apparently, that will do the trick.
 
But if your baby is still crying, then maybe try playing “Copy of A” by Nine Inch Nails. Or at least that worked for this youngster.
 
MORE: Mom Sells “Brat” Daughter’s Katy Perry Tickets on Facebook
 
WATCH: Prince Harry Dances to Katy Perry’s “Firework”
 
PHOTO: Katy Perry and Joe Biden Took a Selfie
 
WATCH: 5-Year-Old Cancer Survivor Stars in Her Own Katy Perry Music Video

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