Haven't used it myself but the author's tool for recommendations is Lidify.

But that doesn't come close to the flow and convenience of Spotify.

So I have to manually invoke Lidify, then see the recommendations, then buy the songs, load them into my library, then mix them into my playlists. And what if I don't like them? Now I bought songs that I have no interest to listen to again.

How many songs can I even buy per year for $99 a year that Spotify costs. $1 per song? I certainly cycle through way more than 100 new songs a year with the Spotify algorithms to hear new music.

I just don't see how he can make a claim that his setup is even remotely comparable to Spotify.