The only 5 songs Spotify and the music chief for 850+ radio stations agree could be the 'song of the summer'

Every year, there is a battle to see which song will become the iconic "song of the summer" in our popular imagination.

This is the song that everyone is singing, is playing out of cars, and in bars, and on beaches. It defines that summer and sticks in our emotional memory.

Traditionally, radio has had a lot to do with pushing the potential songs to the forefront, but lately streaming services like Spotify and Apple Music have begun to creep into the mix.

With that in mind, we consulted two experts to see which songs they thought had a chance at the throne: Spotify's head of trends, Shannon Cook, and iHeartMedia's Tom Poleman, who oversees programming for 850+ radio stations.

"Being upbeat and fun is part of it," Poleman told us. But any song that is infectious has a shot.

Poleman and Cook's lists were different, but five top contenders made both lists.

Here they are: