Re: sus7 chords in \chordmode

[Kieren MacMillan]

Hi Kevin,

> This allows for two possible interpretations of the same symbol, which is why 
> it is preferable to specify the chord (C7) and the suspension (sus or sus4) 
> separately: putting the `sus' in between `C' and `7' makes it unclear whether 
> it applies to the seventh or to the fourth. […]
> I have to disagree with this: there are plenty of situations where adding a 
> seventh does indeed change the chord's function.
> Of course, getting any of the notes wrong is regrettable, which is why 
> unambiguity (i.e. C7sus4 IMO) is so desirable.

+1

Best,
Kieren.
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Kieren MacMillan, composer
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