Nominate only one, since there aren't that many to take note of. And no quirky sub-sub-sub-scene songs -- legit pop songs that reflect the general zeitgeist. Here is the year-end Hot 100 Billboard chart.
My pick: "Shut Up and Dance" by Walk the Moon, which ranked #6 for the year, edging out the seemingly indomitable "Blank Space" by Taylor Swift. While the cosplay '80s video is OK, the music stands on its own for evoking maximum Eighties-ness -- upbeat, cheerful, and sincere.
Unlike contempo dance songs where moving your body is overly sexualized and attention-whoring -- basically encouraging everyone in the dance club to act like self-aware strippers, and feeling judged under the spotlight -- this one makes you feel like dancing just to have some carefree wholesome fun and get lost in the moment.
The frontman says it was influenced by "Just What I Needed", "Hit Me with Your Best Shot", and "Jessie's Girl", but I don't hear any of them in there. It's more like Big Country composed a danceable Celtic rock song with a strong drum beat, Howard Jones was invited to bring earnest affection to the vocals, and Joshua Tree-era U2 provided the driving shimmery guitar strumming.
If this can't make the socially awkward Millennials get out on the dance floor and just let their minds and bodies go, then nothing can. Stop trying to act like retarded strippers and just have fun!