Issue 4075: Doc: Correct the instrumentTransposition setting in NR 2.1.6

  The value of instrumentTransposition affects the MIDI
  pitch.  As all the notes in this example are entered
  at the correct sounding pitch no instrument transposition
  is required.  Previously Kaspar sounded an octave too low.

diff --git a/Documentation/notation/vocal.itely b/Documentation/notation/vocal.itely
index 2a3f89d7eccb2c3f6d7ab3d79c1a6ce87d6b1077..912378ab0877cede4d7fa8d02fc0fc68d1a076bc 100644 (file)
--- a/Documentation/notation/vocal.itely
+++ b/Documentation/notation/vocal.itely
@@ -2575,11 +2575,13 @@ c c c
 Alternatively, if there are many character changes, it may be
 easier to set up @qq{instrument} definitions for each character at
 the top level so that @code{\instrumentSwitch} can be used to
-indicate each change.
+indicate each change.  As notes for vocal parts are usually entered
+at sounding pitch no instrument transposition is required, even
+when, as here, the tenor line is printed an octave higher.
 
 @lilypond[quote,verbatim]
 \addInstrumentDefinition #"kaspar"
-  #`((instrumentTransposition . ,(ly:make-pitch -1 0 0))
+  #`((instrumentTransposition . ,(ly:make-pitch 0 0 0))
      (shortInstrumentName . "Kas.")
      (clefGlyph . "clefs.G")
      (clefTransposition . -7)