Justin Bieber is finally #1.

The singer just notched his first ever Billboard Hot 100 #1 with new single "What Do You Mean," and instead of celebrating (which he may be doing), Justin went straight to work, thanking fans with an acoustic version of his latest hit.

Shortly after Justin posted a video showing love to his fans for their support, he gave us a stripped down version of the upbeat, bouncy track, which may just be as good as the original.

In the clip, Justin's vocals are perfection as he sits beside his guitar player, sporting his favorite black hoodie and ripped jeans. The video intercuts with shots from Justin's whirlwind of promotion for the song.

He's seen hitting up the VMAs, where he performed the song live for the first time, visiting radio stations, interacting with fans and skateboarding on the streets of New York City. So now those pictures totally make sense.

We also get a glimpse at some more personal moments with Justin as he plays with an adorable puppy, jumps into a lake, hits the hiking trails and of course give a shout-out to his Beliebers.

But the best part of the video? The fact that Justin looks ridiculously happy, and who could blame him? He's back on top.