Aaron from the Danish company Markusson is here this week to repair and maintain the Jerusalem Center organ. I took the opportunity to show you a few of the more than 3100 pipes.
The pipe material is sliced and rolled back to produce different sounds.
For each grouping of pipes, he tunes the longest one with an instrument. After he has tuned the longest one, he tunes all of the others by ear. He uses an instrument that is a cup on one end and pointed on the other end. The uses the cup end to slightly close a pipe which produces a higher sound, or the pointed end to slightly enlarge a pipe which produces a lower sound.
It is a tracker organ so each key on the keyboard is connected mechanically to a lever in the organ.
The material becomes brittle with age and has to be replaced. He is gluing new material. There are so many organs in Europe that this man could spare only a few days to do the repairs on the Jerusalem Center organ. The organ is maintained every 2 years by the Markusson company.
From the stage in the auditorium.
The Spanish trumpets protrude horizontally toward the stage. Most of the 3100 pipes are hidden.
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