クリスマスミサ - Anonymous: Organ prelude: Praeambulum "Vom Himmel hoch" (Anonymous: Organ prelude: Praeambulum "Vom Himmel hoch" (Source: Luneburg, Stadtarchiv, Musikabt.,Mu|Anonymous: Organ prelude: Praeambulum ”Vom Himmel hoch” (Source: Luneburg, Stadtarchiv, Musikabt.,Mu)