Re: lily Emulates Kitten On Keyboards

[Erik Sandberg]

On Saturday 23 April 2005 17.39, Will Oram wrote:
> I understand your concerns. If I had any more specific information, I
> would have gladly posted it...this is by far not the first time I've
> described a bug on bug-lilypond. I've tooled around with lily
> for...wow, 1.5 years already. Anyway, I have done my absolute best to
> identify the root of these problem chords (and it ain't an inverted V,
> haw haw), but it seems to be a truly random problem.

Seems like a strange bug. If you want to isolate it, here are a few ideas you 
can experiment with:

- Change the pitches globally (with search/replace), to just include a few 
ones (say c, e and g). Does this change the problem? If not, do the strange 
chords change pitch when the other notes do? In that case, which notes 
control the pitches of the strange chords?
- How does the problem change if you remove one bar at the end or beginning of 
the piece, or if you remove one staff? How much can you remove before the 
problem disappears?
- You can use midi2ly on lily's output to view the midi files' content
- When you have done the above experimenting, I'm sure you have reduced the 
problem to something whose .ly source you can share.
- You could try 2.4's midi output also, 2.5 is considered unstable.

good luck!
Erik