This starts off not terrible and sounds a lot like Ozzy Osbourne's duet with Lita Ford on Close My Eyes Forever and then it quickly deteriorates. I had a little hope for it since I knew Post Malone started off in a metalcore band Ashley's Arrival (see live video at the bottom of this pots at your own risk) which I guess was not super impressive, but was a different direction than his music career ultimately went. As much as I wanted to like this, I just can't get past the non-Ozzy parts. Check it out for yourself.
Post Malone in Ashley's Arrival metalcore band: