tough question
you do understand that music concrete is about using real sounds to make music with? i.e. it is the epitome of sampling using existing sounds to make all musical aspects (chords, melodies, rhythmic percussive ideas, etc.) - you are using your knowledge of re-pitching and time stretching to create the entire soundscape
that said scoring is a simple graphic + stave notation deal to identify your ideas; how you realise it is the true art of music concrete