I built this as a senior project and wanted to throw it up and see if I can get some feedback. This site lets you take any of your Spotify playlists and create a new one based on your playlist. I wont go into the details of the clustering algorithm but it also works as an AB test between two recommendation strategies I had in mind. It is pretty useful if you want to discover new music or are tired of the same playlists. Please check it out and leave a comment. Im not looking to make any money on it, just thought it might be useful and something some people would enjoy!
http://recommendationsforspotify.com