Concerto avec plusieurs instruments et quelques inharmoniques

The discourse of the ¿ Concerto avec plusieurs instruments et quelques inharmoniques¿ uses a specific raw material,i.e. a selectionof spectra of frequencies. There are considered three kinds of spectra: - spectra of odd harmonics - spectra of inharmonics - compressed/ expanded spectra.The music flow results from the activation of one or several spectra which aresubmitted to a dynamic filtering process.A spectrum of frequencies is ahors-temps structure that set in time becomes a process.