Just tried it through the link supplied in the article and looks like its America only or selected countries.

This does appear to work quite well. At the very least, the tonal quality of the music is eerly similar to what I listen to, and Music is pulling from bands I’ve never heard of. It’s nice to find music created in the past five years which sounds just like the late 90s.

Solid music discovery is one feature I miss from Spotify (that and being able to paste music urls directly into the search bar), so I’m gonna give this a shot and see how it is. One feature I’d love to see added is the ability the exclude content, but I guess if I listen to Music enough my overall listening vibe should be consistent.