5 Useful Tools to Convert YouTube Playlist to MP3 Online (Test Results)
Download YouTube Playlist to MP3, MP4, AVI, etc on Mac/Windows
MediaHuman YouTube Downloader - feature-rich app to download online videos and playlists.
Solutions to Convert YouTube Playlist to MP3
GitHub - nikolinaneric/Youtube-to-Spotify-playlist-converter: An app that will iterate through youtube playlist you like and make the same playlist on your Spotify account
How to Download Music from YouTube: 5 Methods - Icecream Tech Digest
Convert YouTube Playlist to MP3: A Comprehensive Tutorial