Katy Perry's new album, Prism, is streaming in full before its Oct. 22 release.

Her fourth studio album is filled with upbeat pop songs. It also features a few powerful ballads, including By The Grace Of God. "I picked myself back up, I knew I had to stay. I got one foot in front of the other and I looked in the mirror and decided to stay," she sings on the tune.

Stream the album here.

The singer revealed that her favorite song on the record is a love song titled Unconditionally.

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"It's different than Roar," she told MTV in a September report. "I think it's a universal love song that everyone's going to be able to relate to no matter the age, male or female. It's my favorite song off the record."

The upcoming album also showcases a more mature side of Perry and is quite different than her 2010 release Teenage Dream.

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"It's the 28-year-old version of me... This record is a lot more stripped down," she recently told Elvis Duran And The Morning Show of New York City's Z-100. "It's the essential oils of me represented."

She also told the radio station how she decided upon the album's unique title.

"Prism is what colors are. That's why I called [the album] Prism. For a minute I thought I was going to do a dark record, but then I let the light in, and that's what a Prism does," she said.

Prism tracklist:

1. Roar
2. Legendary Lovers
3. Birthday
4. Walking on Air
5. Unconditionally
6. Dark Horse (featuring Juicy J)
7. This Is How We Do
8. International Smile
9. Ghost
10. Love Me
11. This Moment
12. Double Rainbow
13. By the Grace of God
14. Spiritual (Deluxe)
15. It Takes Two (Deluxe)
16. Choose Your Battles (Deluxe)

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Katy Perry