Katy Perry Belts Out Emotional "By the Grace of God" at iTunes Festival: Watch Here!

Katy Perry Belts Out Emotional

Giving UK fans a sneak peek of her new music, Katy Perry performed “By the Grace of God” at the iTunes Festival in London on Monday (September 30).

Making good on her promise later that evening, the 28-year-old pop star tweeted, “You want another shade of #PRISM Let”s take WALKING ON AIR to the TOP spot & in exchange, I”ll play a NEW song you”ve never heard tonight!”

Speaking to Billboard about the track, Katy shared, “That song is evident of how tough it really was at a certain point. I asked myself, “Do I want to endure Should I continue living””

Check out the emotional tune that draws from her divorce from Russell Brand and be sure to snag Prism when it hits stores on October 22nd.