Spotify had a blogpost about it back in the day[1]. It was based on prior work that's a bit more general[2]. The basic idea was that you don't really want to ra

Spotify had a blogpost about it back in the day[1]. It was based on prior work that's a bit more general[2]. The basic idea was that you don't really want to randomize, you want to distribute. [1]: https://engineering.atspotify.com/2014/02/how-to-shuffle-songs/ https://engineering.atspotify.com/2014/02/how-to-shuffle-son... [2]: http://keyj.emphy.de/balanced-shuffle/ http://keyj.emphy.de/balanced-shuffle/