youtube-playlist-downloader.sh

# Download Youtube Downloader
# sudo curl -L https://yt-dl.org/downloads/latest/youtube-dl -o /usr/local/bin/youtube-dl
# sudo chmod a+rx /usr/local/bin/youtube-dl

YOUTUBE_PLAYLIST="https://youtube.com/playlist?list=PLqBZS2UWMeUzEzrhL9psrfjm_YicL-OoT"
PLAYLIST_NAME="music"
mkdir -p ~/$PLAYLIST_NAME && cd ~/$PLAYLIST_NAME
youtube-dl --ignore-errors -x -f 'bestaudio[ext=m4a]' --yes-playlist $YOUTUBE_PLAYLIST

find . -name '*.m4a' -print0 | while read -d '' -r file; do
  ffmpeg -i "$file" -n -acodec libmp3lame -ab 128k "${file%.m4a}.mp3" < /dev/null
done

Amazing !!!!