There are 2 repositories under freemusic topic.
A simple app to get songs from YouTube in mp3 format with artist name, album name etc from sources like iTunes, Spotify, LastFM, Deezer, Gaana etc.
Web version of ytmdl. Allows downloading songs with metadata embedded from various sources like itunes, gaana, LastFM etc.
Yandex Music Downloader
A CLI tool that enables you to download single tracks or entire albums from bandcamp.