Nearly a decade ago, Gwen Stefani teamed up with Pharrell and brought you the the number one hit "Hollaback Girl." Today, nearly a decade later, they dropped another hit dance record, titled "Spark the Fire." The song begins with Pharrell's signature one bar count-in, and immediately follows with an unpredictable, almost ballad-type intro. Soon after, the song transforms into the same highly energetic and catchy vibe that we are accustomed to from the duo. Listen to the track below and let us know what you think about it.