Multiple Clefs in one staff (was: Re: number of staff lines)

[Nils]

On Mon, 06 Feb 2012 15:42:03 +0100
David Kastrup <address@hidden> wrote:

> Nils <address@hidden> writes:
> 
> > Hello,
> >
> > I would like to ask for a quick confirmation, since I never worked
> > with an even-numbered staff line count.
> >
> > If you reduce your stafflines with 
> > \override StaffSymbol #'line-count = #3 
> > or #1 or any odd number there is no question. With a treble clef the
> > b' is on the middle line and lines are removed/added above and below.
> >
> > with even numbers like #2 or #4 the b' is not on a line anymore but
> > all stafflines move one step down so a' and c'' are now on the lines.
> >
> > Is this correct and common engraver practice?
> 
> Anything but a line count of 5 is not common engraver practice with
> modern clefs.  The various clefs have a dedicated _line_ they are
> focused on.  G for the treble clef, F for the bass clef, C for the viola
> (tenor?) clef.  For square chant notation, you tend to have four lines
> and an older clef pointing out the C.
> 
> Personally, I don't know the vertical position of the standard clefs
> when using four lines, but I would be very much surprised if they lost
> the fixed relation to their "key" line.
> 
> -- 
> David Kastrup

Thanks for you answer. I thought again and decided to not support different 
line counts in my GUI Editor. You can export lilypond with whatever linecount 
you want, but you have to work in a 5 line enviroment, end of the story.

Related: This is really fun, I just did a 45 line staff, which is kind of a 
Piano-Roll view from DAWs. 
Can I add multiple clefs to one staff? In this case it would be nice to show 
the bass clef and the treble clef on their lines.

Nils