Good luck finding Beck's latest album on iTunes or Spotify. The 20 songs that make up Song Reader were composed and published as sheet music, but never recorded. There is no official interpretation or record supporting the songs.
I love this idea and the way as it opens the door to open collaboration. Perfect for our times where home studios and Youtube offer music enthusiasts easy avenues to showcase their talent.
This is precisely where the Song Reader website comes into play by inviting budding musicians to upload their own interpretation, without being influenced by "the original" because, you know, there isn't one.