Tiento Primero Tono Siguiendo el Passo

Juan Bautista José Cabanilles (1644 – 1712) was a Spanish organist and composer at Valencia Cathedral.
He is considered by many to have been the greatest Spanish Baroque composer, and has been called the Spanish Bach.

According to Gerhardt Grenzing Bosch broke with all the traditions when he built this organ and began a completely new field. It was originally a three manual instrument based on a 16´ principal (Flautat) and had as well a 10 rank Corneta, a 25 rank Mixture both with 2.8 meter wind ducts.

The voicing is done in the same spirit: open feet, the especially high and wide mouths that produce such splendid and generous sounds. The principals, flautats, 16´ and 8´ on the Great have unusually wide adjustable expression slots. This is also a novel addition, a first in the history of organ building.

This Tiento should be played on one manual.
The mood of it is suggested by the Primero Tono, the first Modus.

Various interpretations of the "character" imparted by the different modes have been suggested. Two such interpretations, from Guido D'Arezzo (995-1050) and Adam of Fulda (1445-1505) are:

Guido of Arezzo (c. 990- 1050)
The first is serious.

Adam of Fulda (c.1445-1505)
The first mode lends to any feeling

A picture of the organ are attached as well as the score.