Based on the search results, there are several websites where you can download the MP3 version of "Rewrite the Stars" from the movie "The Greatest Showman" or its cover by Anne-Marie and James Arthur. Here are some of the websites where you can download the song:

• CeeNaija
• Beatzjam
• Connectloaded
• Fakaza
• Boomplay
• WynkMusic

Please note that downloading copyrighted material without permission is illegal in many countries.