Looks like it can spit out separated stems vocal and the rest of the recording. Might be useful for figuring out parts that the vocal makes difficult to hear.
“Yesterday the company released it as an open-source package, putting the code up on Github for anyone to download and use. Just feed Spleeter an audio file and it spleets splits it into two, four, or five separate audio tracks known as stems. The results aren’t perfect but they are eminently usable and Spleeter itself is very fast. When running on a dedicated GPU it can split audio files into four stems 100 times faster than real time.”