Apple music mp3 download on a Windows PC?

You can "Create a Personal Copy" Loophole if you are planning download Apple music MP3 on Windows PC. This method uses the iTunes Match service or Apple Music's built-in matching.

1. Add the songs from your Apple Music playlists to your personal library in the Music app (on Mac) or iTunes (on Windows). 

2. Ensure iCloud Music Library / Sync Library is enabled. Apple will "match" these tracks to its catalog (or upload your own if not available).

3. Cancel your Apple Music subscription (this is the critical step). After cancellation, you will lose access to the streaming catalog.

4. Subscribe to iTunes Match separately ($24.99/year). This service is designed to scan your personal music collection and give you DRM-free, high-quality (256 kbps AAC) downloads of the matched tracks.

5. You can then download these DRM-free files via iTunes on your Windows PC.
 
Important Caveats: This only works for songs available in the iTunes Store catalog. It's a grey area but is a functionality Apple provides. You must pay for both the Music subscription (to find and add the songs) and later for iTunes Match if you want to download Apple music MP3.