We’re getting closer and closer to Katy Perry’s Prism album release (October 22nd to be exact) and she just keeps being the most generous artist ever by giving us new tracks from it. We’d heard “Dark Horse” and “Walking On Air” so far and while we’re already 99 percent sure we’re going to be obsessed with this album, her switching things up and giving us her confessional song “By the Grace of God” makes us appreciate her and Prism even more.

Performing at the iTunes Festival yesterday, she teased the song by saying it was one that’s never been heard by her Katy Kats and isn’t on the Interweb – until now, of course. With just a piano, a few backup singers and her vocals, Katy lets us in on what she was going through post-divorce with Russell Brand. Take a listen.

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Going through a dark period, Katy really makes herself vulnerable with “By the Grace of God,” admitting that she had to pull herself off the bathroom, look herself in the mirror and decide that she does want to keep on living. It’s emotional, it’s moving and it’s inspiring.

In the latest issue of Billboard magazine, Katy opened up even more about the meaning behind the song, saying, “That song is evident of how tough it really was at a certain point. I asked myself, ‘Do I want to endure it? Should I continue living?’ All the songs are real-life moments. I can only write autobiographically. I put all evidence in the music. I tell my fans if they want to know the real truth, just listen to the songs.”

Considering that Katy told the iTunes audience that she wrote the song in November 2012 makes it clear that it all definitely had to do with moving on from her marriage to Russell. We can’t wait to hear what other stories Katy will be telling us when Prism drops on October 22nd.

What do you think about Katy’s very personal song?

Is it one of your favorite off the album so far?