Positive organ. The instrument has a similar piece of the one painted on the altarpiece of 1566, but devoid of carving decoration; and the pipes are degrading to the left.
String instrument. You indefinable the instrument type outlined whole, with its bow, hung right in a vertical position. The sidecut of the body at CC and the pegbox with volute, thrown back, would favor the identification of a viola da braccio.
Tamburello. The small instrument is placed vertically above the bottom shelf, with clearly shown the circular frame with double plates inserted.