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Re: Lilypond and Jazz chords
From: |
Thomas |
Subject: |
Re: Lilypond and Jazz chords |
Date: |
Sun, 31 May 2009 23:38:08 +0200 |
hi,
just one idea to think about:
if you read Werner Pöhlert's "Basic Harmoy" (a very thick volume) he
explains that every move from chord to chord is a fifth (= = half-step), so
if you want to produce consistent jazzchord names from given notes, the most
logical think would be to analyse the notes in the following way:
(1) recognize the root movement (half-tone, whole-tone[= = fifth or 2 x
fifth], fourth/fifth) from the preceeding chord and thereby the root of the
new chord
(2) determine the quality of the new chord. there exist only 5 types of
triads ... major, major +5, major -5, minor, minor - 5 ... all other
existing chords are just composed as a mix of that triads. so if you have
the root, identify the basic triad, and than the other triads that are mixed
in to make it a fancy jazz chord ....and then apply defined naming rules,
ie. a mix of Gminor-triad with Bbmajor-triad is called Gm7, or more
generally, a minor triad with a major triad based on it's third mixed in is
called a m7 chord with the name of the root of the minor triad.
I think only going back to this most basic building blocks of chord movement
and chord composition there ist a chance to automatically recognize chord
names and not get lost in the endless possibilities of chord interpretation
and spelling....
cheers
thomas
"Grammostola Rosea" <address@hidden> schrieb im Newsbeitrag
news:address@hidden
> Johannes Schöpfer wrote:
>> Hi,
>>
>>> As I already said some time ago when I made my own chordnames functions,
>>> I still believe chordnames should be seperated from chords, or at least
>>> chords shouldn't produce chordnames since it'll never be clear. And the
>>> other way round there can also occur problems, i.e. with C7alt., how
>>> should Lilypond know which chord to display then.
>>>
>>> Another thing is the exceptions list.
>>> I think instead of defining some standards (\realbook, etc.) it would be
>>> easier to just type what you mean, maybe something like c:m7, c:mi7,
>>> c:-7
>>> That way everyone could just type each chordname as they want it to be
>>> displayed instead of selecting an exception for each from a list.
>>
>> I have an idea that goes in that direction.
>> It would simplify both entry and interpretation:
>>
>> Basenotes are the only thing really needed to be recognized as note to
>> make a chord(meaning just the basenote) transposeable and to get the
>> duration.
>> Anything else may be added without interpretation.
>>
>> Syntax proposal for \chordName:
>> Basenote[:optional text] [optional anyextension] [ optional "/" for
>> slash-chords [Basenote ...]]
>>
>> Input examples: Displayed like:
>> eb maj7b5 \markup {\concat{Eb\super maj7b5}}
>> eb \triangle \markup {\concat{Eb\super \triangle ##f}}
>> eb:add9 \markup {\concat{Eb\tiny "add9"}}
>> eb:omit3 7 \markup {\concat{Eb\tiny "omit3" \super 7}}
>> eb m7b5 \markup {\concat{Eb\super m7b5}}
>> eb ø7 \markup {\concat{Eb\super ø7}}
>> eb/G \markup {\concat{Eb/G}}
>> eb maj7/f lala \markup {\concat{Eb\super maj7 /F\super lala"}}
>> eb mixolydian \markup {\concat{Eb\super mixolydian}}
>>
>> New shortcuts like \triangle may be useful, for "ø" for example.
>> \maj may be an alias for \triangle
>>
>> This would remove any exeptions for chordentry as anything is dispalyed
>> as it was entered.
>> Displaying the whole chord(<es g bes d>) interpreted as notes would not
>> be possible, but i personally never needed that.
>>
>>
> Please take also care of the user friendlessness to display the chords.
>
> \r
- Re: Lilypond and Jazz chords, (continued)
- Re: Lilypond and Jazz chords, Carl D. Sorensen, 2009/05/30
- Re: Lilypond and Jazz chords, Brett Duncan, 2009/05/30
- Re: Lilypond and Jazz chords, Carl D. Sorensen, 2009/05/30
- Re: Lilypond and Jazz chords, Carl D. Sorensen, 2009/05/30
- Re: Lilypond and Jazz chords, Tim McNamara, 2009/05/31
- Re: Lilypond and Jazz chords, Brett Duncan, 2009/05/31
- Re: Lilypond and Jazz chords, Tao Cumplido, 2009/05/31
- Re: Lilypond and Jazz chords, Grammostola Rosea, 2009/05/31
- Re: Lilypond and Jazz chords, Johannes Schöpfer, 2009/05/31
- Re: Lilypond and Jazz chords, Grammostola Rosea, 2009/05/31
- Re: Lilypond and Jazz chords,
Thomas <=
- Re: Lilypond and Jazz chords, Carl D. Sorensen, 2009/05/31
- Re: Lilypond and Jazz chords, Carl D. Sorensen, 2009/05/31
- Re: Lilypond and Jazz chords, David Stocker, 2009/05/30
- Re: Lilypond and Jazz chords, Tao Cumplido, 2009/05/30
Re: Lilypond and Jazz chords, Valentin Villenave, 2009/05/30