1953, on Elektronische studie 1 from Stockausen :

"In shaping the band by hand, he ( Stockausen) is adapting a technic known to optical sound in the film industry, by wich the the strenght of the audible signal varies directly in proportion to the area of tape passing the playback head. "

Robin Maconie

And now a pair of composers who have scored just so many films and be so modern each in his own way.

This one that I barely understand so far. But I will try intul it's done. Mikro-ton theory.
Cyclical and linear nature of the pitch.

When you start to write letters in the style of Benjamin Britten

And I'm gonna stop there, I think...

@Il-pleut said:

And I'm gonna stop there, I think...

My checking account will be happy about that.

@oid , @everybody , Last advice, when you read a book, try to read 2 or 3, or 4 books speaking of the same subject. By another author, one book older, one more recent, one in another language or at least translated, one from another country.

@Il-pleut thats a nice advice Thanks for the books and their pictures...

Maybe the concepts of design are keys to create a music based on synthetic sounds.

Thinking with lines, shapes, numbers and colors helps navigate the never ending possibilities of a software like Pure data.

Harmony, melody and rythme can be insufficient when anything can be organised with such wide liberty.

Modes can appear everywhere, relations between harmonics and shapes can come out of places that used to be desertic.

Materials and dimensions, utility and necessity, drag creation in other directions.

A couple which I have just come across and am looking forward too.

Berio's Sequenzas Essays on Performance, Composition and Analysis
Dhrupad: Tradition and Performance in Indian Music

Sadly the Berio does not include Sequenza 12 for Bassoon, what can you do.

Oh great collection of books.

 This one is accompanied by a "Student's guide" from the same duo.  Exist multiple editions.