A very important new technique which he used was the use of a divided keyboard (medio registro) which allowed different sounds in the upper half and the lower half of the keyboard (on today's organs one would need a two-manual organ to get the same effect). He wrote 36 settings of the Magnificat, called "Canticum Beatissimae Virginis Deiparae Mariae" (1618). His vocal work shows a skilful use of polyphony.