Heartthrob Nick Jonas was recently in Las Vegas for the iHeartMusic Festival and while he was there, the star decided to surprise some fans.

Jonas was staying at the MGM Grand in Sin City for the duration of the event and saw a great opportunity to promote his infectious new single 'Levels', which is out in the UK on October 2, in person.  

The hitmaker began surprising people who were using the hotel's elevator with impromptu parties and he brought along some guests including Fall Out Boy's Pete Wentz, The Vamps, 'Talking Body' songstress Tove Lo and Canadian singer-songwriter Shawn Mendes. 

Speaking to Entertainment Weekly about his debut solo album, Jonas confessed that he is 'digging deep': "Levels is a good introduction to the next step. I think [the album will] go even a bit further with some more soul and R&B sounds, even hip hop influences in there. I'm really just digging deep."

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Watch footage of Jonas' special elevator parties taking place here: