How do I transfer music from my Android phone to MS Windows? It only shows me the songs from the music app and not the Play Music app with the songs I've purchased.
You should be able to access all of your Google Play music on a computer: Google Play Music. You can download any purchased music though the browser. For instance: I purchased an album from Google Play and it is available for download using the website on the computer (see image).
Hope this helps]2