I want to start a discussion about this and maybe get a change into
LilyPond.

Currently, you can get an "impossible (de)crescendo" error in LilyPond if
your crescendo has a \sf in the middle [1].  It stops the crescendo and if
you restart it, ending in any dynamic mark, you get an error.  This is
because a \sf has a MIDI volume of 100% and this volume continues afterward.

My understanding of a sforzando is that it is an accent.  So my feeling is
that it shouldn't act like a dynamic marking.  The MIDI volume of 100% is
fine for the note this marking is on, but then the volume should go back to
where it was before the sforzando and the crescendo should continue.

Thoughts?  Comments?

% [1] %%%%%%%%%%%%%%%%%%%%%%%
\version "2.18.2"

\score {
  \relative c' {
    c4 \p \cresc d e f |
    g a b c |
    d \sf \cresc c b a |
    g f e d \f |
    c1
  }
  \layout {
  }
  \midi {
    \tempo 4 = 140
  }
}

Knute Snortum
(via Gmail)
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