One more minute, she begged, for the 10th time. The sun still warmed ... picked Katy Perry's "Firework" as their happy song of choice. The suggested songs were as interesting and unique as the ...

Using acoustic analysis technology, powered by The Echo Nest, Spotify has grouped the 4X songs into most and least happy, danceable, artificial, as well as pinpointed some other categories.

This wasn’t even on the album! One of the greatest Christmas bops of all time was a b-side that didn’t make the initial cut. Now, there are a ton of solid Christmas songs off A Charlie Brown Christmas ...

I started asking people to share a song that made them happy. I wanted a happy playlist ... people in my community than I had in a long time. After all, music is a language we all speak fluently.