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Re: [Best Practices] instrument changes
From: |
Janek Warchoł |
Subject: |
Re: [Best Practices] instrument changes |
Date: |
Wed, 6 Jul 2011 20:45:56 +0200 |
2011/7/3 Gilles Sadowski <address@hidden>:
>
>> I don't write much music for transposing instruments, so i cannot give
>> any advice, but i have a question that may trigger a discussion: how
>> to prepare scores with transposing instruments so that they are
>> structurally correct? Consider this canon:
>>
>> common = {
>> \key e \minor
>> \time 4/4
>> }
>> melody = \relative c' {
>> e4 d8 fis e4 b |
>> e8 e fis fis g a16[ g] fis4 |
>> b8 b a a g a16 g fis8 b, |
>> e4 d8 fis e2
>> }
>> <<
>> \new Staff = violin { \common \melody R1 }
>> \new Staff = "clarinet in A" \transpose a c' { \common R1 \melody }
>> >>
>>
>> If i understand how transposing instruments should be notated, the
>> output is how it should look like from a performer's point of view.
>> However, it is structurally wrong: for example MIDI output will be
>> bad, because internally the two parts have differently pitched
>> melodies (while they should be pitched the same and only displayed
>> differently).
>> What is the correct way of doing this?
>
> Something along those lines:
>
> If the source contains notes in concert pitch:
> ---CUT---
> \new Staff = "clarinet in A" {
> \transposition a {
> \transpose c a {
> <<
> \common
> \melody
> >>
> }
> }
> }
> ---CUT---
>
> If the source contains notes written for the instrument in A:
> ---CUT---
> \new Staff = "clarinet in A" {
> \transposition a {
> \transpose c a {
> <<
> \common
> \transpose a c {
> \melody
> }
> >>
> }
> }
> }
> ---CUT---
Wow, looks complicated - but seems to do the job!
Perhaps it would be good to simplify this as a part of GLISS.
thanks,
Janek