I just had a look at Heussenstamm (Norton, an old '87 edition!)
just about the time you think there's a rule he gives an "acceptable" use
that defeats logic, in my opinion.
what I see generally, are these 'rules,' and they are spread out over a
couple of different chapters:
1-when the interval of a second occurs between the two parts, the stems are
aligned
2- if the parts cross, the stem of the higher pitch (even if it belongs to
the lower part) is written on the left side, and the noteheads shouldn't
touch each other
3- questions about unisons: are the note black or white? are there dots in
either part? are the notes flagged or beamed?
a- if the notes have the same rhythmic values they share noteheads (double
stemming)
b- whole notes are written twice
c- undotted black notes may share the same notehead even if the note values
are different
d- if one black notehead is dotted and the other isn't, the dotted note is
traditionally placed to the right of the undotted note (also consider
acceptable to use double stemming even when one of the notes is dotted)
e- separate noteheads should be used when half notes are combined with
dotted half notes and the dotted note should be on the right (when both
notes are dotted but of different values the shorter value notehead goes on
the right)
f- double stemming isn't acceptable for white notes when one of them is
dotted
g- it seems to be a rule of context that when there's a "moving line of
notes" against a a steady rhythmic background (chordal or not), then the
noteheads of the less mobile line go on the right. EX: 6 quarter notes in
a voice moving againt two dotted halves? the halves go on the right
4- it may be preferable to change the clef of a staff temporarily to make
things more readable
-Cecil
----- Original Message -----
From: "dc" <[email protected]>
To: <[email protected]>; <[email protected]>
Sent: Friday, February 26, 2010 7:58 AM
Subject: Re: [Finale] polyphonic keyboard notation
dhbailey écrit:
You've just proven my point -- there is no universally agreed on basis to
choose which note gets moved, thus the difference in the two printed
editions you cite. If there were a precise rule, they'd both be shifted
the same.
Right. Unless some engravers know the rules and others don't ;-)
Thanks for your reply, though!
Dennis
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