| Year | City, Country | Code | Title | Instrument |
| 19-09-1937 | 5.13 | Quartet Fantasia "Amazonas" | string quartet | |
| 20-07-1939 | Rio de Janeiro, Brazil | 5.14 | Quartet in G | string quartet |
| 21-01-1942 | Fazenda Rio do Braço, SP | 4.10 | Trio | violin, viola, violoncello |
| 04-09-1942 | Rio de Janeiro, Brazil | 4.05 | Sonatina a 3 | flute, viola, violoncello |
| 30-01-1943 | 5.03 | Quartet Nr. 1 | string quartet | |
| 1943 | 3.24 | Sonata Nr. 1 unfinished work |
viola, piano | |
| 02-1945 | Fazenda Rio do Braço, SP | 5.12 | Miniature Variations unfinished work |
clarinet, violin, viola, violoncello |
| 28-12-1946/30-01-1947 | Fazenda Rio do Braço, SP | 5.04 | Quartet Nr. 2 | string quartet |
| 1953/03-1954 | São Paulo, Brazil | 5.05 | Quartet Nr. 3 | string quartet |
| 05-1956 | São Paulo, Brazil | 5.06 | Quartet Nr. 4 | string quartet |
| 19-10-1957/12-12-1957 | Sofia, Bulgary | 5.07 | Quartet Nr. 5 | string quartet |
| 11-10-1963/25-04-1964 | Genève, Suiça / Brasília, Brazil | 5.08 | Quartet Nr. 6 | string quartet |
| 07-12-1965 | Brasília, Brazil | 5.09 | Quartet Nr. 7 | string quartet |
| 1965 | 3.01 | Adagio | viola, piano | |
| 1966 | Brasília, Brazil | 3.17 | Espaços for viola & Piano | viola, piano |
| 1971/72 | 15.09 | Mutationen IV | viola, tape | |
| 1973 | 15.12 | Mutationen VII | string quartet or any other combination of Mutationen II, IV, | |
| 1973 | 5.01 | Mutationen VII | string quartet or any combination of Mutationen ii, iv, and vi | |
| 1975 | 6.04 | Mutationen VIII | string quartet, piano | |
| 1975 | 5.02 | Mutationen VIII | violin, viola, violoncello, and piano | |
| 1975 | 15.13 | Mutationen VIII | string quartet, piano (combination of Mutationen ii,iv,v,vi and tape) | |
| 1976 | 6.05 | Mutationen XII | 2 violins, viola, violoncello, double bass | |
| 1976 | 15.02 | Bodas Sem Fígaro "La Nozze de Figaro" |
flute (picolo), clarinet in Bflat, piano, violin, viola, violoncello, double bass, synthesizer | |
| 1976 | 15.16 | Mutationen XII | string quintet or string orchestra, tape | |
| 24-02-1980 | Brasília, Brazil | 16’00 | Concerto Grosso | string quartet & orchestra |
| 07-08-1982 | Brasília | 3.25 | Sonata Nr. 2 | viola, piano |
| 1982 | 14.02 | Paródia | voice, viola, other instruments ad lib. (piano , perc) | |
| 03-09-1982 | Brasília, Brazil | 3.12 | Duo | violin, viola |
| 02-04-1983 | Brasília, Brazil; Rio de Janeiro, Brazil | 2.15 | Fantasia Sul America | viola |
| 31-05-1983 | Brasília, Brazil | 8.22 | Fantasia Sul America for viola & Orchestra | viola, orchestra |
| 1983/10-1985 | Heidelberg, Germany / -, - | 4.03 | Improviso a 3 | flute, viola, guitar |
| 16-06-1984 | Baden-Baden, Germany | 4.01 | Briga Dialética Dos Estilos | flute, viola, guitar |
| 1987 | 7.50 | Sinfonia no 12 | soloists: violin, cello, flute, clarinet, viola, trumpet, oboe, horn & trombone | |
| 26-06-1987 | 10.01 | Duo | female voice, viola | |
| 19-05-1988 | -, - / Moscow, Russia | 8.05 | Concerto Nr. 1 for viola & Orchestra | viola, orchestra |