Re: Enhancement request

[Tim McNamara]

On Mar 20, 2010, at 6:39 AM, Mats Bengtsson wrote:

> Quoting Carl Sorensen <address@hidden>:
>
> > On 3/19/10 8:40 AM, "Phil Holmes" <address@hidden> wrote:
> >
> > > According to the documentation for 2.12.3 "There is no support  
> > > for chords
> > > where the same note occurs with different accidentals in the same  
> > > chord."  I
> > > have a situation where this is required and would like to add it  
> > > as an
> > > enhancement request.
> >
> > I've copied this to bug-lilypond so an issue can get made on the  
> > tracker,
> > but I doubt this will get worked on in the near future.
>
> This issue has been discussed on the mailing lists several times  
> over the years. The first question is what layout such a feature  
> would use. One option is shown in http://lsr.dsi.unimi.it/LSR/Item? 
> id=505, but I guess there's no single established typesetting  
> practice for these situations.

This would be helpful for the jazz alt chord, if it were being  
written out in piano notation.  Jazz lead sheets aren't usually done  
that way, though, and the chord is usually denoted by something like  
Ab(alt) as a chord name above the staff.  (I have noticed in photos  
of recent jazz recording sessions, though, that jazz musicians now  
often use proper sheet music instead of lead sheets.  Must be the  
change from jazz as learned in bars and clubs to jazz as learned in  
conservatories and universities).

The alt chord can contain the root, 3rd, b7th and any or all of the  
b5, #5, b9, #9 and sometimes further extensions.

http://en.wikipedia.org/wiki/Altered_chord

So G(alt) could be (in worst case scenario)  <g b des dis f aes ais>

I kind of like the way it's done in the example on the Wikipedia  
page: two notes side by side preceded by the accidentals.  About as  
clear as it's going to get.