Katy Perry to perform at 2015 Grammy Awards

Katy Perry will reportedly perform at the 2015 Grammy Awards.
Fresh off her Super Bowl XLIX halftime show, the 30-year-old singer is expected to sing "By the Grace of God" at the music event, according to Billboard. The song is an emotional ballad that hails from her fourth studio album, Prism.
Gwen Stefani and Adam Levine, Tony Bennett and Lady Gaga, Jessie J and Tom Jones, and Hozier and Annie Lenox will perform duets at the ceremony. Ariana Grande, Miranda Lambert and Pharrell Williams are also confirmed, along with trio Rihanna, Kanye West and Paul McCartney.
Perry released Prism in October 2013, and will embark on a fourth leg of her Prismatic World Tour on Feb. 16. The singer announced new dates last week on Twitter, and revealed the tour will premiere March 28 via Epix on Monday.