LilyPond: Is it possible to revert to "atonal" key?
lilypond
Solution
On the LilyPond mailing list, I was told that there really isn't a way for this to be done—although the following is a workaround as regards the problem with transposition:
\withMusicProperty #'untransposable ##t \key c \major
This code prevents C major from being transposed.
Another workaround, which I have used, is to use tags, so that transposing scores use different keys than C scores. Here is an overview of tags: http://lilypond.org/doc/v2.12/Documentation/user/lilypond/Different-editions-from-one-source
Problem
In LilyPond, there is a distinction between specifying `\key c \major` and leaving the key blank. In the former case, transposing instruments will change the key signature accordingly, while in the latter case, no key signature will be added. Using `\transpose c d`, for instance, will add two sharps if `\key c \major` is listed, but not when no key is listed. What happens when I go from an ‘open key’ section to a tonal section, and back to ‘open key’? I've tried `\revert \key`, but this seems to be bad syntax. Is there a way to revert to a key-free area? Minimal example, which should have a key signature of one flat in the second section but no sharps or flats elsewhere: ``` \transpose c d { % Open key c8 e f g e d des c \key c \minor c es g es f d c b % How to return to open key?? c8 e f g e d des c } ```