I have written a piece of music in 9/8 time (slip jig time?) where the last note on the bass clef is a note 9 beats long. It can be spelled in eight different ways (some of them are ridiculous):
Whole + Eighth
...Half + .Eighth
..Half + Quarter
.Half + .Quarter
.Quarter + .Half
Quarter + ..Half
.Eighth + ...Half
Eighth + Whole
In my case, I end with a dotted quarter note on the treble clef, so I presume that .Half + .Quarter is the right thing to use, but what should I use in this context? More generally, is there a standard way to notate a note value of any length using ties, or does it depend on the context (like enharmonic spellings)?