If you subscribe to YouTube Music, you can download the song for offline listening. However, note that these files are encrypted; you cannot move them to a different app. This is not a true MP3 file, but it works for offline playback.
This is a high-fidelity store focused on audiophiles. They sell MP3s and FLAC files. Their version of Dangerous includes the unedited album track. michael jackson will you be there mp3 download