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Re: problem with predefined-guitar-fretboards.ly?
From: |
Carl Sorensen |
Subject: |
Re: problem with predefined-guitar-fretboards.ly? |
Date: |
Wed, 17 Jul 2019 14:37:16 +0000 |
User-agent: |
Microsoft-MacOutlook/10.10.b.190609 |
On 7/17/19, 6:55 AM, "lilypond-devel on behalf of David Kastrup"
<lilypond-devel-bounces+c_sorensen=address@hidden on behalf of address@hidden>
wrote:
James <address@hidden> writes:
> Hello,
>
> I saw arecent update by a LP user to an 'already-fixed' tracker
>
> <https://sourceforge.net/p/testlilyissues/issues/3290/>
>
> That made it into my inbox thus:
>
> On 06/07/2019 21:54, Christopher Heckman wrote:
>> It's isn't just the website; the boards for augmented and diminished
>> chords are calculated incorrectly.
>>
>> \include "predefined-guitar-fretboards.ly"
>> \new FretBoards \chordmode { b:dim f:aug aes:aug g:dim }
>>
>> The F aug chord is incorrect; it actually shows a G augmented
>> chord.
>> In all four cases, the numbers at the bottom do not match up with the
>> diagram. The B dim number should be 2343, the A flat aug 032110, and
>> G dim should be 3131.
This is just a misunderstanding of the numbers: they are not fret
numbers but fingering numbers. It is a bit unusual that they are
present by default: typically players are expected to figure them out on
their own, and sometimes they are just inscribed in the dots.
I agree with David's assessment that the reporter misunderstood the numbers,
which are fingering numbers. The presence or absence of fingering numbers is a
house style decision. Most of the popular music piano/guitar/vocal books that
I have use finger numbers; they are about equally split between having the
numbers at the bottom of the diagram and having numbers in the dots.
f:aug is clearly wrong, aes:aug has the right notes but the root note is
awkward, not being the lowest. I have no idea how guitarists would feel
about that.
The diagrams and fingerings came from my reference "The Big Gig Bag Book of
Guitar Chords". I don't have enough experience to vouch for the diagrams; I
just copied the information. I would be happy to replace any diagrams with
correct diagrams as reported by somebody with more expertise than me.
Thanks,
Carl