Katy Perry "roared" from Toronto, Canada to be a part of the 'The Grammy Nominations Concert Live!!' (Dec. 6), which announced the 2014 Grammy nominees live from Los Angeles.

Perry offered an acoustic version of her smash hit 'ROAR,' which was nominated for Song of the Year.

Before she launched into the full, rich performance of one of her biggest hits, Perry prefaced it by saying, "I had no idea that it would become… I did the goosebumps test, and thought this was a good song and that I should trust my intuition… but I didn't think it would take on such a life of its own. I hope this song has inspired you guys and helped bring out that self-strength."

And with that, she delivered the empowering anthem like only she can.