Re: French viol/lute tablature

[Jonathan Kulp]

Kim Shrier wrote:
> I have letters working after a fashion.  I have added 
> letter-tablature-format
> and bass-viol-tuning, tenor-viol-tuning, and treble-viol-tuning to my 
> copy of
> output-lib.scm.  This is a very simplistic implementation of using letters
> that uses the same font, font size, and alignment that the numbers use.  
> The
> results are not very pleasing and I will need to tweak it to make it look
> better.
>
> I am still pondering how I want to organize the code for the other aspects
> of French tab.
>
> Kim

Ok I got a file from this site:

http://www.musicolibre.eu/spip.php?article134

that has a scheme hack to make letters but it's not working right.

Here's the scheme:

#(define (letter-tablature-format str tuning pitch)
    (make-whiteout-markup
     (make-vcenter-markup
      (string (integer->char
               (+ (char->integer #\a)
                (- (ly:pitch-semitones pitch)
                 (list-ref tuning (- str 1)))))))))


The problem line is apparently the next-to-last where it says 
"pitch-semitones pitch".  When I try to run the file I get errors saying 
"Wrong type argument in position 1 (expecting Pitch).  Can you see 
what's wrong with it?  Or better yet, would you mind sharing a small 
example of your own that does work?  I'm interested in this.  Thanks,

Jon
--
Jonathan Kulp
http://www.jonathankulp.com