Re: NR 6.5.2., 6.7

[Mats Bengtsson]

Carl D. Sorensen wrote:
> N.R 6.7 shows the use of Scheme code as an articulation.  The reason why
> this works is unclear to me, but I can see there is some power here.  An
> explanation would be really helpful.  The articulation that is added is not
> a Scheme function, but rather the return part of a Scheme function.
>   
An articulation is represented by a Scheme expression (not a Scheme 
function):
(make-music
         'ArticulationEvent
         'direction
         1
         'articulation-type
         "flageolet"))

Here, a Scheme function is used, which constructs such an expression. 
These things are pretty
common in the world of Scheme and similar languages. I once worked with 
a huge program
implemented in LISP, where the program constructed new LISP expressions, 
which were
evaluated and in their turn constructed new LISP expressions which were 
evaluated ...
and in the end returned something. I can honestly say that none of us at 
the company understood
fully how that program worked, but for some weird reason it seemed to 
work fairly well anyway.

  /Mats