This 1978 remix of the Sesame Street classic "C Is For Classic" was apparently the first remix by New York DJ Larry Levan. From a kids music perspective, it mostly buries the melody and the vocals, so the original is mostly obscured. From a shake your (and your kids') booty perspective, totally awesome.
Cookie Monster - "C Is For Cookie (Larry Levan's Funky Version Special Disco Mix)" [YouTube] (via Maura Johnston)
