Op. 4 String quartet in B flat major:
1. Allegro, 2. Andante sostenuto, 3. Presto, 4. Allegro. Completed in 1890. (See also the orchestral work Presto [Scherzo].)

Op. 56 String quartet in D minor (Voces intimae):
1. Andante - Allegro molto moderato, 2. Vivace, 3. Adagio di molto, 4. Allegretto (ma pesante), 5. Allegro. Allegro. Completed in 1909.

Adagio (D minor)
for string quartet. Completed in 1890.

Adagio (F minor)
for string quartet. Completed in 1888-89.

Alla marcia
for string quartet. Completed in 1888.

Allegretto (A major)
for string quartet. Completed in 1888-89.

Allegretto (D major)
for string quartet. Completed in 1888.

Allegro
for string quartet. Completed in 1888-89.

Andante - Allegro molto
for string quartet. Completed in 1888-89.

Andante festivo for string quartet
Completed in 1922. See also the orchestral work Andante festivo.

Andante molto sostenuto
for string quartet. Completed in 1888-89.

Andantino (A majori)
for violin, viola and cello. Completed in 1889.

Andantino (Cmajor)
for string quartet. Completed in 1888.

Canon
for violin and cello. Completed in 1889.

Duo (C-duuri)
for violin and piano. Completed in 1891-92.

Duo (C major; also: Adagio [- Allegro])
for two violins. Completed 1881-82.

Duo (E minor)
for violin and cello. Completed in 1887.

Fuga för Martin W[egelius] (Fugue for Martin Wegelius)
for string quartet. Completed in 1889.

String quartet in A minor:
1. Andante - Allegro, 2. Adagio ma non tanto, 3. Vivace, 4. Allegro. Completed in 1889.

String quartet in E flat major:
1. Allegro, 2. Andante molto, 3. Scherzo (Allegretto), 4. Vivace. Completed in 1885.

Menuetto [and] Allegro (also: Allegro [and] Menuetto)
for two violins and cello. Completed in 1887. Possibly connected with Serenata.

Moderato - Allegro appassionato
for string quartet. Completed in 1888-89.

Molto moderato - Scherzo (Allegretto)
for string quartet. Completed in 1885. Piano arrangement of the scherzo ([E major] and [E minor ]) in 1886.

Piů lento
for string quartet. Completed in 1888-89.

Presto
for string quartet. Completed in 1888.

Suite (also: Trio) in A major
for violin, viola and cello: 1. Prélude (Vivace), 2. Andante con moto, 3. Menuetto, 4. Air (Andante sostenuto), 5. Gigue. Completed in 1889. The violin part of movements 4 and 5 is missing.

Serenata
for two violins and cello. Completed in 1887. Possibly connected with Menuetto [and] Allegro.

Theme and Variations in C sharp minor
for string quartet. Completed in 1888. Part of the work is missing.

Theme and Variations in G minor
for string quartet. Completed in 1888.

Vattendroppar (Raindrops)
for violin and cello. Completed in 1881 (?).