From the current lilypond doucmentation: http://lilypond.org/doc/v2.18/Documentation/notation/changing-multiple-pitches
I see the following explanation for the function \transpose
:
\transpose frompitch topitch musicexpr
It also provides two examples:
To go from a piece written in D to a piece written in E
\transpose d e {
\relative c' {
\key d \major
d4 fis a d
}
}
To go from a piece written in C to a part written in A
\transpose a c' {
\relative c' {
\key c \major
c4 d e g
}
}
I'm having trouble following applying this from pitch & to pitch logic.
Simply put, if I'm transposing from concert pitch, to instrument pitch, why isn't the expression \transpose c a {}
. Testing this logic of course shows that this notation does not work, hence probably the two distinct use cases documented and demonstrated in the documentation.
Is there any particular reason why, using common vocabulary / logic, is inherently incorrect to interpret going from concert pitch, to instrument pitch? It's interesting to me that the documentation switches from talking about to and from pitches to talking about equivalent pitches between the two examples, but to me, it's all simple interval changes so I'm struggling to see the difference.