Per Nørgård

There was a programme with some Nørgård on the radio last
night. If you have flash, maybe you can hear it here:

http://www.bbc.co.uk/programmes/b011txyb

They talked about his microtonal notation. First they said
he didn't notate the pitches precisely, and then described
something that appeared to be 72 note equal temperament.
They said he was aiming for sounds from the harmonic series.

Nothing I can find on the web sheds much light on his use
of microtonality. Let's see if anybody here knows anything.

Graham