Pietro Lappi(Canzoni da Suonare Libro1) No.20Double Chorus System = 5 v. + 5 v. bar1-9 : A Part, tutti bar9-32 : B Part bar33-40 : C Part, 3/1 bar40-48 : D part bar49-53 : Coda http://aeolianconsort.chakin.com/Lappi.htm