YouTube-Audio-Download
Python script for downloading audio from YouTube songs/videos. All you have to do is specify the path to your folder and then type song's/video's name and the sound will be downloaded into your folder.
YouTube.Audio.Downloader.mp4
If you want to run the script on your computer you will need to generate your own YouTube Data API v3 api key and install google-api-python-client(https://github.com/googleapis/google-api-python-client) as well as pytube.