Mallette, who made a debut in singing with her son, took to twitter to announce the same, reported E!Online.
"That was the best night of my life Justin Bieber. You were so sweet to me and I had so much fun, I Love You. Amazing night recording my first song. Thank you so much for writing it love!," she tweeted.
Bieber, 19, also snapped an Instagram video capturing her singing in the studio for fans.
"Got my moms courage enough to get in the booth for the first time she sounds so good," he wrote.