Note 5 — Chapter III

Tenor C is the lowest note of the tenor voice or the tenor violin (viola). It is one octave from the bottom note of a modern organ keyboard, which is called CC. The lowest note of the pedal-board is CCC. Counting from the bottom upwards on the manual we have, therefore, CC (double C), C (tenor C), c (middle C), c1 (treble C), c2 (C in alt) and c3 (C in altissimo). This is the highest note on the keyboard of 61 keys. According to the modern nomenclature of the pianoforte keyboard this note is c4, and is frequently so stated erroneously in organ specifications.

GG is four notes below CC, the break in the scale coming between GG and FFF. Tenor C is an important note to remember. Here is where the cheap builder came in again. He cut his stops short at tenor C, trusting to the pedal pipes to cover the deficiency.