Hi Bert,
I would say that in C-minor (if the harmonic structure, context etc is C-minor) I would not use Fb, but E, because the flat version of IV grade seems very strange for me, while the neutralized version of III grade is common.
If it's a C-minor chord, and the trill is on degree III from above, I would personally use the flattened IV: in standard Western harmony the resolution tendency of a flattened note (e.g., IV-flat) is downwards, whereas the resolution tendency of a raised note (e.g., "neutralized" III) is not. In C# minor, would you use E sharp instead of F-natural?
This kind of decision is definitely context- (and, often, person-) specific: no "rule" can ever be universally helpful.
Best regards, Kieren. _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org http://lists.gnu.org/mailman/listinfo/lilypond-user
