The examples sound too unrealistic. As for the Spleeter comparison, I just discovered this a few days ago, and half a day later managed to install it. And it sounds nothing like Spleeter. Which to me sounds just like another filter isolator with weird artefacts. I ran a basic house/techno song through it, which I thought would give it a better shot, but it was a bit less than perfect. Perfect at telling you what volume the tracks should be if you have the stems for it. :-)