Built by Padre Diego Cera, Augustinian Recollect Priest from Graus, Spain. He started constructing the organ in 1816 and completed it in 1824 with the installation of the Horizontal Trumpets.

Restored in 1973 by Johannes Klais Orgelbau in Bonn, Germany.

Major overhaul and re-leathering in 2004 by the Diego Cera Organbuilders.

Is the oldest existing pipe organ in the Philippines.  Its lower manual division was constructed in the 18th century while the upper manual division to gether with the present casework was completed in 1810.  Recent studies show that Padre Diego Cera constructed the organ.

In 1997, its restoration was completed by Diego Cera Organbuilders together with Federico Acitores of Torquemada, Spain.