"moving backwards in time" ?

[Gilles]

Hello.

I'm confused by the output of the attached file: lilypond creates
an empty bar.  [And generates a "programming error".]
And the clef change indicator is pushed to the next line.

Without the addition of the second "\transpose" part, the output
is as expected.
Also, if the "\lyricsto" line is commented out, it comes out fine.

Should I do this in another way or is it a bug?

Further experiment would seem to indicate it is related to the
"cadenza" commands:
- When removing both "\cadenzaOn" and "\cadenzaOff", a second empty
  bar appears (after the second, transposed, part).
- When removing only "\cadenzaOff", the second part disappears
  altogether!


Thanks,
Gilles

test2.ly
Description: Text document