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 . Brahms's Symphony in E Minor, No . 4, ends with an elaborate passacaglia .