The practice of performing music on original instruments was once the exclusive domain of early music specialists who sought to revive the characteristic sounds of Renaissance, Baroque, and Classical instruments and ensembles scaled to proper size. The so-called "historically informed movement" eventually expanded into re-creating 19th century music, which yielded some ear-opening performances; but this practice soon began to overlap with modern interpretation and instrumentation, so the actual differences between period and modern strings or winds were minimal.