

It for a fact uses CEF: https://www.spotify.com/us/opensource/
Chromium Embedded Framework literally describes itself as follows on its Git repos: “Chromium Embedded Framework (CEF). A simple framework for embedding Chromium-based browsers in other applications.”
The Spotify “app” is mostly just web app code running on top of a single page Chromium instance, meaning for the most part, it isn’t truly native.









Honestly, while I still use Apple Music for some things (I don’t like Apple, but I’m unfortunately stuck on it right now), I’m a big fan of building up a collection of digital media files bought either directly from artists or ripped from the CD collection I’m building. I usually go for FLAC, though less for its compression and more for its superior metadata support compared to WAVs.
For discovering new music, Bandcamp allows you to check out some songs; otherwise, check it out on YouTube or something and buy it directly from the artist later.
Like others have said, Bandcamp might not have everyone, but they do have a lot of indie artists and even some bigger ones. Some artists that don’t have everything on Bandcamp might have their own store you can buy from.