 In 1987, Cage completed a piece called "Two", for flute and piano, dedicated to performers Roberto Fabbriciani and Carlo Neri.The title referred to the number of performers needed; the music consisted of short notated fragments to be played at any tempo within the indicated time constraints.Cage went on to write some forty such "Number Pieces", as they came to be known, one of the last being "Eighty" (1992, premiered in Munich on 28 October 2011), usually employing a variant of the same technique.