The Fruits/ did their very own version of Caramelldansen and referenced the animations that made the song a meme through their music video. Very fun to watch.
Ryu*, REDALiCE and DJ Shimamura have all remixed it haha. It really is taking Japan by storm, it's really popular for some absurd reason to warrant having it's own single with a karaoke version and remixes.
EXACTLY what I'm trying to figure out... D: It's probably being done at every anime con, mostly by white people. I guess it's because they like doing group participation?
The Japanese version of Caramelldansen 
