@misc{
title = {Piano},
author = {},
editor = {Beethoven, Ludwig  <van>},
editor = {Benedetti Michelangeli, Arturo},
editor = {Chopin, Fryderyk Franciszek},
editor = {Contiene 5 pezzi },
editor = {Dati anche dal contenitore },
year = {1997},
address = {S.l.},
publisher = {Edimedia},
}