JVKE - Upside Down

If you've been on TikTok you'll know that Upside Down is one of the most popular sounds from recent weeks (mainly thanks to Bella Poarch [hu?]).

It was released in its "original" form (which is a mash up of other songs/sounds from the app) not too long ago. You'd be forgiven for thinking it was Charlie Puth on the previous version, but he's now hopped on a remix of it out this week.