Falling Stars: find one-hit wonders on Spotify

During this summer I got bored from my Spotify playlist and started hunting new songs, the task revealed harder than I thought and I end up coding a small website to achieve my goal.

Falling Stars helps you find one-hit-wonders and create a Spotify playlist out of those songs.

The most interesting part, apart from discovering the nice Spotify API was having to deal with an asynchronous loop; I had basically to loop over the Related Artists of a song and search if one of them is a one-hit-wonder...