Maybe I just live under a rock, but this is actually the first time I've heard of Groove music. I don't know if that's saying more about me or MS' marketing department.
Apparently it’s on Windows 10 but everyone just installs iTunes or Spotify much like no one gives a shit about Edge and just installs chrome these days.
That says more about the platform than you or their marketing. The whole thing is rotting from the outside in.