Jennifer Lopez has topped the first ever YouTube.com music chart with her track "On the Floor."
The newly-launched YouTube 100 calculates the popularity of the top 100 music videos, both amateur and professional, across the site and officials published the first countdown on Thursday.
Lady Gaga's controversial new track "Juda"s sits at two, while "E.T." by Katy Perry, featuring Kanye West, is in third place.
Bruno Mars, Nicki Minaj and Chris Brown also feature in the top 10.
YouTube product manager Chris LaRosa says, "Not only does the YouTube 100 give props when fans make original videos for popular songs, it also captures YouTube's one-of-a-kind musical diversity.
"YouTube users get into music as fans and original musicians, and our new chart gives the community a better way to find the most engaging music on YouTube."