Duration: 6'00''Sound diffusion: stereophonic

The harmonic construction of a minor seventh chord is a prelude to the disintegration and decomposition of the sound of the violin, up to the total loss of timbral or harmonic recognition of the initial material. The function, according to traditional harmony, of the minor seventh chord as a chord that opens up the possibility of passing to a different key, is used metaphorically as a pretext for passing from the harmonic sound to the inharmonic sound, through a hostile "narrow passage", poised between sound and noise.