Considering  “Due studi armonici” for instrumental groups (1991), in “Moto perpetuum” for 8 instruments, simple major and minor triads alternating upon  transposition grades based on a random series composed of 110 figures are used.

 
In “Notturno” (1991), the material used is based exclusively upon  three four-sound chords which complete the dodecaphonic whole in a canon form. Every chord is given to a different four-instrument group; the first group (cl.1,cl.2,cl.3,vla) develops the 1,5,6,10 chord, which originates a three-voice unison canon  and a free voice. The second group (fg. Cr.1, cr.2,vcello) develops the 2,3,7,11 chord, which originates a double unison canon, while the third group (fl., ob., vn., vn.2) develops the 0,4,8,9 chord, originating a double unison canon. The transposition grades form a series of 20 figures (1-2-3-4-5-6-7-8-9-10-11-10-9-8-7-6-5-4-3-2). The three groups fit in by revolving kaleidocyclically.

Notturno, per 12 instruments (flute, oboe, 3clarinets, bassoon, 2 horns,2 violins, viola, violoncello) (1991) Lenght: 8'. 
Prima esecuzione: Adria, Teatro Comunale, Ensemble del Conservatorio di Adria, Direttore: Ambrogio De Palma (13/6/91).

Musical Kaleidocycles