Googling around to find who these vendors are, it might be Rockbot https://rockbot.com/ https://rockbot.com/ and others who are the big players here. This is

Googling around to find who these vendors are, it might be Rockbot https://rockbot.com/ https://rockbot.com/ and others who are the big players here. This is really where I wonder where the AI solutions are. Feed it a Taylor Swift song, get a high quality cover recording with comparable vocals of a different voice of that song back which can be licensed much more cheaply (still has to be covered by ascap/bmi etc).