PASSACAGLIA, the name of an old Spanish dance, supposed to be derived from pasar, to walk, and calle, street, the tune being played by wandering musicians in the streets. It was a slow and rather solemn dance of one or two dancers. The dance tune resembled the "chaconne," and was, like it, constructed on a ground-bass. Brahm's Symphony in E Minor, No. 4, ends with an elaborate passacaglia.