Francisco Rodríguez can be considered a direct pupil of Jorge Bosch, the most important organbuilder in 18th century Spain. Bosch had in charge the construction of a new organ at Seville cathedral in 1779. The work was not finished until 1793. That time can be considered the origin of a dinasty of organbuilders that were activ in Andalucia until the middle of the 19th century. Members of this dinasty were:
- Juan Debono, born in Malta, brother-in-law and skilled workman of Jorge Bosch;
- Francisco Rodríguez, a native of Asturias;
- Antonio Otín Calvete, el mayor, a disciple of Juan Debono;
- Antonio Otín Calvete, el menor, a son of the precendent; and, probably,
- Antonio Pilat, a native of Germany, very activ in Cádiz, Seville and Córdoba during the first half of the 19th century.
The destruction of the organ built by Jorge Bosch in Seville cathedral in 1888 doesn’t allow us to enjoy of one organ that was considered unique in his time. Nevertheless, many of the technical and sonorous novelties to be find in the organ at the church of San Juan in Marchena are the direct testimony of the experiments carried out by Bosch in his work.
Before the restoration, the instrument was preserved in his integrity. Only three pipes had to be reconstructed, together with the 16’ flautado at the rear façade. Rodríguez had never installed the pipes of this stop, even if it was included in the original project. Nevertheless, the original windchest and the conducts were made as to allow the pipes to be installed without problems.
The instrument has a windchest for the main organ having 240 cm in depth, with a double ventil for each note. The reconstruction of the flautado 16’ at the rear façade bring out the reconstrucción of a third ventil on the same windchest. This triple ventil system was also foreseen by Rodríguez but never made on this organ. In fact, this seems to be the unique case of a windchest and mechanic having three ventils for each note existing today, even if the organ in Cádiz cathedral, built by Antonio Otín Calvete el menor, had once the same system.

The organ has two keyboards of 54 keys (C – g’’’) and a pedalboard of 12 notes (C-H), without tirasse to the manual. All the stops are divided between c’ y c#’.


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