Events Reconstruction of a complete series of instruments of X and XI hundreds, to describe the origins of polyphony. Develop educational activities at “Casa della Musica e della Liuteria”, Randazzo CT. Hold more concerts of Sacred music and Concert/talks throughout Italy and Europe. Increasing cooperation with other groups and societies having our same aims. Carry on research about ancient musical theories and relationship between music and astronomy. Beatus de Lebana, (St. Millian de la Cogolla Logrono, Spain, 1070 ca.) https://www.youtube.com/watch?v=UpZP62BPVGY