Watch: How an Algorithm Decides Your Next Favourite Song

You are listening to a song and then suddenly a new song pops up. How does the app know what you like?

Here’s how an algorithm decides your new favourite song. (Photo: iStock)

You are on Spotify and you are listening to your favourite song.

And then, all of a sudden, a song pops up, a completely new one that you didn’t know about. And before you know it, you start humming this fresh, never-heard-this-before song.

The most obvious question that unconsciously pops up is – how did the app even know you would like this particular song? Well, here’s the answer to that question and a lot more.

(With inputs from NBC News.)