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This is Scientific American's 60-second science. I'm Christopher in Taliatta.

Many parents are no doubt familiar with their teenager's musical taste.

But very few are probably inspired enough by them to launch an experiment.

I listened to some of the music that my oldest teenage daughter is listening to.

And I was surprised at how different that music was from what I used to listen to.

Natalia Komarova, an applied mathematician at UC Irvine.

Since I'm interested in evolution in general and in mathematical description of evolution,

I thought that studying the evolution of music would be a good idea.

Komarova and her team analyzed half a million songs, released in the UK between 1985 and

2015, using online databases that describe songs musical characteristics, like rhythm, mood, and

danceability. Here's a song that was high on the charts in 2014

that has a high danceability index,

so it's a very danceable song.

Shake It Off by Taylor Swift.

Here's a 2014 song that has a low happiness index.

Stay with me by Sam Smith. song that has a low happiness in it.

Stay with me by Sam Smith.

...