A 77-year-old picked Katy Perry's "Firework" as their happy song of choice. The suggested songs were as interesting and unique as the people behind them. Organized by generation, these are 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.

Country music's Christmas songs are like side dishes at your fancy holiday dinner. Most country fans reach for the standards, but a few will always prefer those specialty treats. Others you ...

Of course, there is the classic 'Happy Birthday' song everyone knows ... In this gallery, we compile some of the greatest birthday songs ever, from upbeat tunes to emotional songs.