On 8/13/09 1:13 AM, "Bertalan Fodor (LilyPondTool)"
I want to use quint-chords, that is, containing only root and fifth,
like <c g'>
I want to define a chord name for this, to let me use
c:5 or c:five
c:5 won't work; c:5 gives a C major triad.
I don't know how hard it would be to define a new modifier :five. I would
not be in favor of accepting such a modifier into the main code base.
The proper modifier for creating it in LilyPond is c:5^3 (which is actually
shorter to type than c:five). One can also use c^3, which is even shorter,
but it has the implied 5 and so may not communicate well in the source code.
and display C5 in the chord name staff.
It requires a simple chord exception.
This has been nicely discussed here (the rock term for what you call a
"quint-chord" is "power chord"):