Spleeter by Deezer is a project that utilizes AI/machine learning to separate stems for source audio. It is in fact the technology behind commercial products like Izotope RX. The main project page is here: https://github.com/deezer/spleeter

A software developer has put together a VST version of the algorithm, available here at the time of this lesson being published: https://github.com/diracdeltas/vstSpleeter/releases