There are over 4 million songs in Spotify that have never been listened. That is 20% of all the songs in Spotify.
That number is good demonstration of Internet market dynamics. It used to be (and still is) hard to get your song on the radio. If you were able get on the playlist, you were quite sure to get certain amount of listens. Nowadays, it is easy to get on Spotify, but to be actually heard requires active promotion. Especially, if you are not Daft Punk.
Forgotify aims to change that (or at least get a couple of these unheard songs on rotation). It is a discovery website, which enables you to randomly listen to those unheard “gems” from Spotify. The songs were not necessarily that horrible. I find some classical music, Hebrew folk songs, chansons and Christian punk*. No one just knows that these songs are there to find and listen. And no one cares enough to promote them.
*“Scaterd Few was a Christian punk band from Burbank. CCM magazine described their music as “pure punk for dread people,” stating that it was a cross between Janes Addiction and Charlie Mingus.