From Popeater site post,
"Justin is still young, but he's dealt with both the joys and pitfalls of fame,"
"He is playing big brother, and making sure Jayden is prepared for what's to come."
The two worked together for the single 'Never Say Never,a soundtrack of Jaden Smith and Jackie Chan's movie Karate Kid.
Justin Bieber is nominated for Best New Artist and Best Pop Vocal Album, pitted against the likes of Lady Gaga, John Mayer, Katy Perry and Susan Boyle.
As Usher handles the two singers and anchoring their Grammys performance, Jaden and Justin are in good hands as they get ready to hit the stage on Sunday night.
"The performance will be fun," the source says, adding that the number will feature Bieber playing acoustically, before a segue into a more uptempo groove. "This is Justin's moment to show the world, especially those who never believed in him, that he's very talented. Trust me, you won't want to miss this one."
