Between the 16th-19th centuries, notable Spanish music creators included organists and harpsichordists, but Spanish music did not become influential until later. The arrival of Richard Wagner influenced musicians to seek indigenous sources of inspiration. This included Felipe Pedrell, who introduced Wagner's music to Spain and collected folk songs, laying the groundwork for Spanish musical nationalism. Pedrell's students, Isaac Albéniz, Enrique Granados, and Manuel de Falla, were also influenced by folk music and flamenco. Along with Joaquín Turina, these four composers established a nationalist school of Spanish music rooted in folk traditions.