Note this downloads from YouTube if an equivalent match is found. Quality will be 128kbps unless you have a YouTube Music subscription.

This is info taken directly from the github link but useful to know.

command line tools > gui tools

Zotify is great.

I downloaded approximately 3,000 songs in one go from a premium account to get the high quality versions.

Made me a little nervous but as the repo says, they have no reports of any one getting banned for using the tool.

zotify basically plays back spotify in 10x or higher speeds and saves the audio to a new file. Audials can do the same thing.