If I were in Boston this weekend, there’s no question what I’d be attending: the Visual Music Marathon at Northeastern University. This FREE event on Saturday, April 28, is a 12-hour(!) marathon screening of musically-themed abstract and experimental animation. The screening, which is happening as part of the Boston Cyberarts Festival, will include 64 contemporary films, chosen from over 300 submissions. Additionally, one of the hours will be devoted to live video performances, a couple other hours are curated programs by Larry Cuba of the Iota Center and Bruce Wands of the School of Visual Arts, and yet another hour is for historic “visual music” films by the likes of Oskar Fischinger, Len Lye, Hans Richter and Norman McLaren (his Begone Dull Care is the image above). It all takes place at the Egan Research Center (120 Forsyth Street, Boston, MA) at Northeastern University. A complete schedule can be found at the Visual Music Marathon website.