Justin Bieber is determined to make believers out of everyone with his third studio album, Believe.

In honor of the LP's release on Tuesday, Justin took over MTV's Times Square studios and invited 100 of his biggest fans to join him for our 30-minute special, "Bieber Live." But that was just the start: Bieber is going to stop celebrating anytime soon as critics are praising his latest effort, which shows the 18-year-old pop star taking musical risks.

Working with producers like Diplo, Rodney Jerkins, Hit-Boy and, of course, his mentor Usher, Bieber samples many different genres on Believe. He also showed his hip-hop love by reaching out to Big Sean, Drake, Nicki Minaj and Ludacris.

As most fans know, Luda and Bieber first teamed up for the 2010 hit "Baby." And when MTV News caught up with Ludacris recently at Bonnaroo earlier this month, he predicted that their new collabo, "All Around the World," will repeat of the success of "Baby."

"That's gonna be another smash, trust me," Ludacris said, adding that they have plans to shoot a video. "He's grown up, he's an extremely focused artist. I love working with him, and when you see an artist from where he's started to where he's at now and where he wants to go, you just really see his vision and his dream. As soon as they brought me the record, I instantly fell in love with it.

During Tuesday's "Bieber Live," Justin expressed his excitement about working again with Ludacris on what he called a "melodic" and "perfect" track. "To reunite with him was awesome," the singer said. "All my fans now love Luda because of 'Baby,' so ... having him back on this song was great. I'm taller than him now," he added with a smile.

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