thanks, John, though I confess I still don't see it. I haven't got anything
like absolute pitch but I have got very good relative pitch and I find the
intervals are perfectly clear from conventional notation - which is what you
are left with if you take the shapes away.
I suppose it's just a mat
I think the point is that untrained ear singers may have a better ear for
intervals than for absolute pitch.
The shapes are an indication of the interval between the note to be sung and
the tonic or subdominant - the 4 shapes correspond to fa, sol, la, and mi - a
unison, tone, major third, and
