If you copy and paste the YouTube URL you can appeal to a music copyright organization that can convert to MP3 and download it - GIGAZINE
The World's Largest 'YouTube to MP3' Converter Appears Dead
Softpedia on Twitter: "YouTube-MP3[.]org is most likely shutting down in a couple of months https://t.co/AFAtv3X8FN #youtube2mp3 #youtube #piracy https://t.co/EwL1KJfUbR" / X
7 Tips on How to Fix "YouTube-MP3 Not Working" Issues