Digital “Burning CD” Equivalent?

Hi all! I want to effectively burn someone a mix cd as a gift, but I don’t want to use a physical CD. I want to give them a collection of songs — without the songs labeled so they’re all a surprise — in some digital format. Even if I could do the unnamed/mystery part via streaming platforms, this person doesn’t use music streaming platforms. I don’t know if I’m just not thinking of some way to do it? Or if there’s some app for this? I don’t mind buying the songs.

If I can’t find a way to do it, I guess I’ll just actually burn a cd and they can listen to it in their car or something. On that note, how are people even burning CDs these days?