Ariana Grande had a surprise for fans who attended her concert last night in Los Angeles. Pop superstar, Justin Bieber once again joined Grande on stage and the two performed three songs together.

People reported that Bieber first arrived on stage with Grande two weeks ago in Miami.

Bieber tweeted a hint to his fans that he would be doing some special Wednesday night and later thanked Grande for letting him join her on stage.

The two sang three songs together including, "Love Me Harder," "Where Are U Now" and "As Long as You Love Me." Bieber performed the part that is original sung by the band, The Weeknd, Radio.com added.

Bieber has also been taking to Twitter to say that he is in fact working on new music.

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