[terribleperson]

I believe Google Music was able to do this several years ago, but killed the feature. I could easily be wrong, because I only know of Google Music at all second hand.

[dangravell]

I wrote a summary of these types of services here: https://www.blisshq.com/music-library-management-blog/2021/0... - hope it's of interest.

[kevincox]

This feature is back in YouTube Music but it seems that uploaded music is fairly separate from their library. I don't think for example mixes and recommendations use your uploaded music.

[unmole]

Google Music let you upload your own music and stream it on any device.