Re: Notehead color on programmed pitch change

[Peter Gentry]

>-----Original Message-----
>From: Thomas Morley [mailto:address@hidden 
>Sent: Tuesday, May 26, 2015 5:33 PM
>To: Peter Gentry
>Cc: lilypond-user
>Subject: Re: Subject: Re: Notehead color on programmed pitch change
>
>2015-05-26 18:09 GMT+02:00 Peter Gentry <address@hidden>:
>> Thanks very much for your solution - I'm not yet sure why it 
>> works...how does 'tweaks know about notehead color? All very baffling
>
>Well, most (every?) music-event may be tweaked.
>
>Look at the terminal-output from:
>
>\displayMusic
>{
>  \tweak color #red c''1
>}
>
>My code adds this tweak to the NoteEvent under certain conditions.
>
>>
>> Outlook strikes again - try this
>
>Well, perhaps you'll have success persuading outlook to keep 
>your formating.
>If not I'd look out for another mail-program ;)
>
>
>Cheers,
>  Harm

Thanks for the pointer...

I tried this
{
  c'1
  \tweak color #red c''1
}

And the log gives

(make-music
  'SequentialMusic
  'elements
  (list (make-music
          'NoteEvent
          'duration
          (ly:make-duration 0)
          'pitch
          (ly:make-pitch 0 0))
        (make-music
          'NoteEvent
          'tweaks
          (list (list (quote color) 1.0 0.0 0.0))
          'duration
          (ly:make-duration 0)
          'pitch
          (ly:make-pitch 1 0))))


Maybe this use of \tweak would be useful to many people - like a door opening.

Still not sure how to interpret (list (list....... But as long as Lily 
does.....:)

Now to experiment with other music properties......