GitHub - udidoron/youtube-dl-multi-mp3-downloader: Small wrapping script in Python (2.7), which allows downloading multiple YouTube files' audio into mp3 files. Uses youtube-dl, ffmpeg and ffprobe.
Youtube DL - AlternativeTo.net
YouTube-DLを使用してYouTubeビデオからMP3トラックをダウンロードする方法
command line - How to download playlist to mp3 format with youtube-dl? - Ask Ubuntu
🏅▷ YouTube to MP3 Video Converter on Mobile: Using DLNowSoft | Audio and Video