"Erwartung" (1909) and "La voix humaine" (1959) closely follow the traditional definition, while in "Eight Songs for a Mad King" (1969) by Peter Maxwell Davies, the instrumentalists are brought to the stage to participate in the action.Twenty-first century examples can be found in "Émilie" (2008) by Kaija Saariaho and "Four Sad Seasons Over Madrid" (2008) or "God's Sketches" (2011) both of them by Jorge Grundman.