There have been some incredible infographics lately, but this new polygraph visual might be the most creative yet. Polygrapher Matt Daniels along with Billboard's Emily White and Trevor Anderson used the publication's Hot Rap Songs chart to create a moving timeline of the top 10 songs since April 30, 1989. In the '90s, the Notorious B.I.G., 2Pac, Dr. Dre, OutKast, Bone Thugs-n-Harmony, and Kriss Kross all dominate the chart. Of course, the likes of Diddy, Missy Elliott, and Jay Z start to take over as the chart heads into the new millennium. As the graph progresses, it crossfades between each of the No. 1 songs as they reach the top. You can also click on a song title to listen to the song in full anytime you choose. Check it out here.