Justin Bieber Wows Singapore: On Time, On Form [Video]

A delighted Justin Bieber took to Twitter following his closing party show at the Singapore Formula One Grand Priz on Monday night.

The pop star didn't verdict the concert himself, preferring to retweet a slew of approving messages from tour mates, crew, and fans.

Grammy award winning R&B producer, Rodney Jerkins, who has traveled to Singapore to work on the 19-year-old's upcoming new album, tweeted:

"Another great show tonight! @JustinBieber rocked it here in Singapore! #BELIEVETOUR."

Tour dance choreographer, Nick Demoura, trilled:

"@justinbieber killed it tonight!"

Fans, both in Singapore and those experiencing the concert online, have also been effusive in their reaction to a reportedly dynamic, engaged performance and --- of course --- those inevitable shirtless moments.

Local outlets report not only did the Canadian disrobe for show closers "Boyfriend" and "Baby," apparently his pants almost fell off at one point.

The all-in-white, quiffed one tore through 18 songs in a one hour and 45 minute set that included hits such as "One Time," "Somebody To Love," "Beauty and A Beat," "One Less Lonely Girl" and more.

Bieber, Tour Musical Director, guitarist Dan Kanter, and Ryan Good backstage before Singapore show.

The first artist to play Singapore Formula One's first ever post-race concert, Justin performed to a crowd of 12,000, many of whom reportedly started queuing from Sunday to stand in the mosh pit.

Secondary Three student Elysia Marie Chong, 16, told Straits Times: "He was just so damn good. And hot. It was a good concert because he showed how much he appreciated the fans."

After Singapore, Justin is set to perform at the Bangkok, Thailand's Challenger Hall on September 26 where Mike Tyson was jokingly invited by the singer to sing at. A string of Asia shows including Beijing, Shanghai and Korea follow, where its rumored native superstars Psy and Big Bang's G-Dragon may join the teen star onstage.

In October, amid a fresh, solo music release from the popster, the tour moves on to Latin America, New Zealand and Australia, with the 15-month trek wrapping on December 8 in Perth.

And if all of that isn't quite enough for one year, Bieber's movie-documentary Believe is expected to hit theaters at Christmas.

[Image via Just Jared]