Re: how to prevent natural sign?

[guoguocuozuoduo]

Are they in the same measure/bar? If they are, the second note also means a 
B-flat, so it is not necessary to add a flat sign, but it should also be played 
as a flat. (The flat lasts for the whole measure/bar.)

发自我的 iPad

> 在 2015年4月10日，09:00，Jinsong Zhao <address@hidden> 写道：
> 
> Hi David,
> 
>> On 2015/4/9 22:25, David Nalesnik wrote:
>> [snip]
>>    You could do something like:
>> 
>>    \version "2.19.17"
>>    \relative c'' {
>>       \clef "treble"
>>       % \set Staff.extraNatural = ##f
>>       r4 < g bes > r \once \omit Accidental < g  b >
>>    }
>> 
> 
> Thank you very much. It works like a charm.
> 
> 
>>    However, I wonder if you doing this as part of a more contemporary
>>    accidental style.  In that case, you should see:
>> 
>>    
>> http://www.lilypond.org/doc/v2.19/Documentation/notation/displaying-pitches#automatic-accidentals
>> 
>> Though the question is whether the second note on the third staff line
>> is meant to be a B-flat, and thus wouldn't require a flat in ordinary
>> notation...  In that case you need to write bes again instead of b.
> 
> I just work on a small piece of song. There are only one place that use bes. 
> The song is in C major.
> 
> Thanks again.
> 
> Best,
> Jinsong
> 
> 
> 
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