Ariana Grande -- you may know her better as Cat Valentine on the Nickelodeon sitcom 'Victorious' -- has already appeared as Greyson Chance's ex-girlfriend in the music video for his single 'Unfriend You.' But these days, she's one with the mic. And you just might recognize the song.

On 'Victorious,' the 19-year-old Grande plays an aspiring singer, and since she was cast in her first Broadway role when she was just 15, she was no stranger to vocal work. She's already lent her talents to two 'Victorious' soundtracks, and now she's showing off those chops even more by covering Justin Bieber's 'Die in Your Arms.'

The song is from the Biebs' 2012 album 'Believe,' and the Jackson 5-ish love song was not only well-received by critics, it charted all over the world. And apparently Grande loves it too.

She posted her cover on her official SoundCloud page along with the message, "This is for my fans.. Thank you for all that you do.. Your love and support is what inspires me to work hard and keep my head up. I love you all so much."

Take a listen to her version and compare it to Bieber's original -- what do you think?

Listen to Ariana Grande's Cover of 'Die in Your Arms'

Listen to Justin Bieber, 'Die in Your Arms'