Re: Chords and what they mean

[BB]

\version "2.18.0"

chExceptionMusic = {

%<c g>1-\markup { \super "5" }

%<c g>1-\markup { \super "5" }

%<c g>1-\markup { "5" }

<c g>1-\markup { "5" }

}

chExceptions = #(append

(sequential-music-to-chord-exceptions

chExceptionMusic #t)

ignatzekExceptions)

harmonies = \chordmode {

\set chordNameExceptions = #chExceptions

c1 c1^3 g^3 c:m c:sus4 c1:/f

}

<<

\new ChordNames {

\set chordChanges = ##t

\harmonies

}

\new Staff {

\relative c' { \harmonies }

\break

}

>>

On 17.09.2015 09:27, address@hidden wrote:

First I will declare, that I am not 100 percent sure this is a bug, but friends of mine, musicians, say it probably is. Also, as I am not an expert, I have tried to learn by searching on among others Wikipedia.

It is about chords, a few of them. It started when I should clean write a score from a manuscript. In one measure there were noted two chords, C5 and C. Obviously not the same, as they stood just beside of each other. A search on Wikipedia also told me, and this was also confirmed, the author's intention, that C5 means C(no 3), hence <c g>, while the chord C means <c e g>. But LilyPond treats these two the same and produces the same notes. This is also clearly said e.g. in Appendices A.1 and A.2 of Notation Reference, as well as in the text part. However even if possibly a correct procedure, is it a correct practise?

Another such discrepancy is about Csus, which Wikipedia (and my friends) says is equivalent to Csus4, hence <c f g>. But LilyPond produces <c g>, hence what should come from the notation C5 as in the previous paragraph.

So, what is the truth?
Kaj

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