camera in quattro tempi for orchestra (1938) (a.k.a. Symphony No. 1) Due invenzioni for string orchestra (1939) Concerto per orchestra in tre tempi (1940) Introduzione for string orchestra (1941) Fantasia e fuga su temi gregoriani (Fantasy and Fugue on Gregorian themes) for string orchestra (1944) Divertimento for small orchestra (1944) Concerto da camera for small orchestra (1952) Concerto for piano and orchestra (1952–1953) Sinfonia breve for orchestra (1954) (a.k.a. Symphony No. 4) Musica for string orchestra (1958) Preludio elegiaco (Elegiac Prelude) for orchestra (1959) Episodi for orchestra (1961–1962) Concerto for 2 pianos and chamber orchestra (1962) 3° Concerto for orchestra (1964) Concerto n. 2 for piano and orchestra (1968) Varianti for orchestra (1970) Studio for orchestra (1973) Sinfonia n. 5 for orchestra (1975) Sinfonia n. 6 for orchestra (1976) Sinfonia n. 7 for small orchestra (1978) Contrasti for orchestra (1979) Concerto for guitar and string orchestra with vibraphone ad libitum (1981) Quadruplum for orchestra (1981) Concerto for violin and orchestra (1982–1983) Alternanze for orchestra (1983) Omaggio a Stravinsky (Homage to Stravinsky) for chamber orchestra (1984) Strutture for small orchestra (1985) 4° Concerto for orchestra (1988) 3 Studi d'interpretazione for string orchestra (1990) Operas Il pozzo e il pendolo (The Pit and the Pendulum), an opera in one act from Edgar Allan Poe (1957) La Smorfia, an opera in one act and two scenes, libretto by Riccardo Bacchelli (1959) Count down, an opera in one act, libretto by Antonello Madau Diaz (1969) Instrumental music Improvisation for guitar (1970) Studio da concerto for solo clarinet (1971) Cinque Preludi (Five Preludes) for guitar (1971) Studio da concerto for harpsichord (1972) Musica per sette per gruppo da camera (Music for seven for chamber group) (1975) Sonata breve for guitar (1976) Due movimenti for viola and piano (1977) Etudes for guitar (1977) Studio da concerto for solo bassoon (1977) Divertimento a due for 2 guitars (1982) Musica a due for flute and guitar (1982) Come una cadenza for guitar (1983) Dialogo for flute and piano (1983) 5 + 5 for double mixed quintet (1984) Tre pezzi per pianoforte (Three pieces for piano) (1984) Studio da concerto for solo cello (1991) Trio for Strings (1993) Polyphonic choral music Tre liriche corali di Ungaretti (Three choral lyrics of Ungaretti) (1940) Liriche di Ungaretti for chorus a cappella (1971) Sono una creatura (I am a creature), cantata for chorus and orchestra, text by Giuseppe Ungaretti (1971) Poesie di