The Double Rainbow Song was created by the Gregory Brothers, the musical group behind the Auto-Tune the News series, after Paul Vasquez's emotional video about seeing a double rainbow in Yosemite became a viral hit in 2010. They set his enthusiastic narration to music, and the resulting song spread across YouTube and early social media as both a tribute and a parody of internet fame. It remains popular today because it captures a specific moment in early viral culture, when an ordinary person's genuine amazement could become a shared musical joke.