Re: "bitonal" key signatures

[N. Andrew Walsh]

Thanks for the tips. Another question: how can I force a display of the "natural" time signature, so that it's clear the right hand is in a different tonality than the left? Right now there's just blank space. 

Cheers,

A

On Wed, Feb 10, 2016 at 2:54 PM, Pierre Perol-Schneider <address@hidden> wrote:

I just tried it.
Strangely, you still have to slightly extra-offset the LH key to get a proper alignment.

~Pierre

2016-02-10 14:42 GMT+01:00 Pierre Perol-Schneider <address@hidden>:

Yep, much smarter Phil.

2016-02-10 14:40 GMT+01:00 Phil Holmes <address@hidden>:

Better would be to add \tweak X-extent #'(0 . 0) just before the C major key sig in the right hand?


--
Phil Holmes


----- Original Message ----- From: Pierre Perol-Schneider
To: N. Andrew Walsh
Cc: lilypond-user
Sent: Wednesday, February 10, 2016 1:19 PM
Subject: Re: "bitonal" key signatures

... but is probably not the "better" way!



2016-02-10 14:18 GMT+01:00 Pierre Perol-Schneider <address@hidden>:

Hi Andrew,


In lhMusic mes.2 try :
...
\tweak X-extent #'(0 . 0)
\tweak extra-offset #'(-3 . 0)
\key es \major
....


Cheers,

Pierre




2016-02-10 13:36 GMT+01:00 N. Andrew Walsh <address@hidden>:

Hi List (again),

here's another question, more general: I have a piano part in which the upper voice is to have one key signature, the lower to retain another one (namely, the right hand has \key c \major, while the left hand has \key es \major, which was also declared at the start of the piece). Something like this:


\version "2.19.36"




beambreakOn = {
 \set subdivideBeams = ##t
 \set baseMoment = #(ly:make-moment 1/8)
 \set beatStructure = #'(2 2 2 2)
}


beambreakOff = {
 \set subdivideBeams = ##f
 \set baseMoment = #(ly:make-moment 1/8)
 \set beatStructure = #'(2 2 2 2)
}


rhMusic = \relative c'' {
   \key es \major
 \time 4/8
 r16 bes d bes d bes d bes |
 \key c \major
 \beambreakOn \tuplet 3/2 { es,\( f g } \tuplet 3/2 { a b cis } dis4\) |
}


lhMusic = \relative c {
 \clef bass
     \key es \major
 \time 4/8
 <<
     { r16 d f d f d f d | }
     \\
     { bes2 | }
   >>
 \key es \major
 <<
   { es,16 bes' es bes g' d g d | }
   \\
   { es,2 | }
 >>
}


\score {


 \new PianoStaff <<
   \new Staff = "RH"  <<
     \rhMusic
   >>
   \new Staff = "LH" <<
    \lhMusic
   >>
 >>
}
------------

My issue is as follows: the engraver in charge of key signatures is displacing that second "\key es \major" _expression_ in the left hand, presumably because there was already one in place from the beginning (or perhaps because it's assuming a possible collision with the "\key c \major" _expression_ in the right hand). In either case, what I would prefer is that both new key signatures are not displaced horizontally, so that the second "\key es \major" is, in effect, merely a cautionary repetition of the one from the start and aligned underneath the naturals of the "\key c \major" _expression_ in the right hand.



Is there a better way to do this?


Cheers,


A


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