Justin Bieber's Ever So Eventful Friday Involved Jay Z, Kevin Hart, MJ And More

Justin Bieber is one busy, teen star. Recent bruisings have likely left him highly motivated to refocus the world's attention back on his music, and yesterday he succeeded.

Somewhere in between cruising around Los Angeles in his new blue Ferrai before flying from LAX to Miami, Florida, the 19-year-old managed to excite and inflame the Internet on Friday (Aug. 16).

Justin took to Twitter to post behind-the-scenes reveals from Maejor Ali's video shoot for his single "Lolly," which features raps from the "Baby" singer and Juicy J and was released earlier this year.

To his fans' delight, shirted and shirtless pictures of Bieber taken while on-set also surfaced.

Then, the huge news. An online leak of his duet with the late Michael Jackson on unreleased song "Slave 2 The Rhythm," after which the singer tweeted a tribute to the King of Pop.

"Excited for what is to come. MJ set the bar," he wrote in one of two tweets."Not only for music but for being an entertainer and how u treat the fans. Wish he was here..."

Re-worked with Bieber's vocals woven around his hero's, the result is a chart-ready electro dance banger that now only requires a greenlight from The Michael Jackson Estate.

Justin Bieber On Music Video Set For 'Lolly'While Beliebers loved it most Jackson fans have expressed their displeasure over the song online, and an inevitable petition for a Jackson-only release of the track has been launched.

Despite the objections from some Jackson fans, Bieber has continued to express his appreciation and respect for the entertainer on his Twitter account one day after "Slave 2 The Rhythm" leaked.

Justin's visit to Miami timed with Jay Z and Justin Timberlake's final Legends of The Summer show at the Sun Llife Stadium.

After the reportedly showstopping concert which was attended by Bieber, Miami Heat hero LeBron James and actor-comedian Kevin Hart, the Canadian later posted an Instagram taken while at the Mansion nightclub of himself sitting next to Jay Z and Hart.

The photo was captioned: "Chilling with the boys @kevinhart4real and J."

Incidentally, Jay Z rode to the nightclub with Bieber.

We're impressed.

Justin Bieber Parties With Jay Z And Kevin Hart In Miami

Bieber's Hov love is well known. Back in April when his 2013 roller coaster timeline was just getting into stride, the popster invoked the rap mogul in an interview to explain why he would no longer be taking the bait when the press irritated him.

"I don't need to address every speculation," he explained to Teen Vogue."Remember when Cam'ron dissed Jay-Z? Jay-Z didn't even respond. Why didn't he respond, because he's Jay-Z."

At some point during his very eventful Friday Justin posted an Instagram video of a group of Miami fans. Bieber's videographer and friend Alfredo Flores posted a picture of their impromptu listening session.

Bieber is currently enjoying a well deserved break from his mammoth Believe world tour which resumes at the end of September. Evidently happy to be off the road for a while, on Saturday the singer tweeted: