First is given the name of the original work. Below that are given the arrangement or arrangements which Sibelius has made of the work.

Op. 1 no. 4  Julvisa: Giv mig ej glans, ej guld, ej prakt (Christmas hymn: Give me no splendour, gold or pomp)
Arrangement for male choir in 1935, female choir in 1942, children's choir in 1954.

Op. 1 no. 5  On hanget korkeat, nietokset (High are the snowdrifts)
Arrangement for two voices and piano in 1903-05, for female voices in 1942.

Op. 3  Arioso
Arrangement for voice and piano 1911.

Op. 4  String quartet in B flat major
Arrangement of the 3rd movement for string orchestra (Presto, also Scherzo) 1894; first performance in Turku on 17th February 1894 (Orchestra of Turun Soitannollinen Seura under Jean Sibelius).

Op. 5  Six impromptus for piano
Arrangement for string orchestra of the movements 5 and 6 (Impromptu) 1894; first performance in Turku on 17th February 1894 (Orchestra of Turun Soitannollinen Seura under Jean Sibelius).

Op. 7  Kullervo Symphony
Arrangement for baritone and piano of part of the music (Kullervo's Lament) 1893, revised version 1917-18. Arrangement for baritone and piano of part of the music (Kullervo's Lament) 1957.

[Op. 10/11] Music for a "lottery arranged by the Vyborg Students’ Association to promote popular education in the province of Vyborg";
arrangement for orchestra ( Karelia Suite op. 11): 1. Intermezzo, 2. Ballade, 3. Alla marcia. Completed in 1894. Arrangement for piano of parts 1 and 2 in 1897 (?).

Op. 13 no. 4  Våren flyktar hastigt (Spring is flying)
Arrangement for song with orchestra in 1914.

Op. 15  Skogsrået (The Wood Nymph), symphonic poem (ballad)
Melodrama arrangement (for narrator, piano, two French horns and strings) 1895; Arrangement of the final sequence for piano (Ur "Skogsrået") 1895.

Op. 17 no. 1  Se’n har jag ej frågat mera (Then I questioned no further)
Arranged as a song with orchestra in 1903.

Op. 18 no. 1  Sortunut ääni (The voice now stilled) for male choir
Arrangement for mixed-voice choir in 1898.

Op. 18 no. 3  Venematka (Boat-ride) for male choir
Arrangement for mixed-voice choir in 1914.

Op. 18 no. 4  Saarella palaa (Fire on the island) for male choir
Arrangement for mixed-voice choir in 1898.

Op. 18 no. 6  Sydämeni laulu (The Song of My Heart) for male choir
Arrangement for mixed-voice choir in 1904.

Op. 19  Impromptu
Piano score in 1910.

Op. 26  Finlandia, symphonic poem
Arrangement for piano in 1900, male choir (Finlandia hymn; words by a) Wäinö Sola, b) Veikko Antero Koskenniemi) in 1938 and for mixed-voice choir (Finlandia hymn; words by V. A. Koskenniemi) in 1948.

[Op. 27]  Kung Kristian II (King Christian II) incidental music
Arrangement for orchestra (suite op. 27): 1. Elegie, 2. Menuetto, 3. Musette, 4. Sången om korsspindeln (The Song of the Cross-Spider); completed in 1898. Arrangement for piano 1898, no. 4 with song text.

Op. 30  Islossningen i Uleå älv (The Breaking of the Ice on Oulu River), improvisation
Arrangement of part of the work for children's choir (?, Nejden andas) 1913.

Op. 31 no. 2  Har du mod? (Have you courage?)
Piano score in 1904. Revised version for piano (with text) in 1911-12.

Op. 31 no. 3  Atenarnes sång (The Song of the Athenians)
Arrangement for boys' choir and male choir and piano harmonium ad lib. in 1899; arrangement for piano (with text) in 1899.

Op. 32  Tulen synty (The Origin of Fire)
Piano score of the final version in 1910.

Op. 33  Koskenlaskijan morsiamet (The Rapids-Shooter's Brides), ballad
Arrangement for male choir and orchestra 1943.

Op. 36 no. 6  Demanten på marssnön (The Diamond on the March Snow)
Arranged as a song with orchestra in 1916-17.

Op. 37 no. 3  Soluppgång (Sunrise)
Arrangement for song with orchestra in 1914.

Op. 38 no. 1  Höstkväll (Autumn Evening)
Arranged as a song with orchestra (Herbstabend / Höstkväll) 1904, for solo voice and string orchestra (Herbstabend) 1904.

Op. 38 no. 2  På verandan vid havet (On a Balcony by the Sea)
Arranged as a song with orchestra in 1903.

Op. 38 no. 3  I natten (In the night)
Arranged as a song with orchestra in 1903.

Op. 44 no. 1  Valse triste
Piano arrangement in 1904.

Op. 45 no. 1  Dryaden (The Dryad), symphonic poem
Piano arrangement (Die Dryade) 1910.

Op. 45 no. 2  Musik zu einer Szene
Piano arrangement (Tanz-Intermezzo) 1904, adapted fr orchestra in 1907: Op. 45 no. 2  Dance Intermezzo

Op. 46  Pelléas och Mélisande (Pelleas and Melisande) stage music
Arrangement for orchestra (suite op. 46): 1. Vid slottsporten (At the Castle Gate), 2. Mélisande, 2a. På stranden vid havet (At the Seashore), 3. En källa i parken (A Spring in the Park), 4. De trenne blinda systrar (Three Blind Sisters) , 5. Pastorale, 6. Mélisande vid sländan (Mélisande at the Spinning Wheel), 7. Mellanaktsmusik (Entr'acte), 8. Mélisandes död (The Death of Mélisande). Completed in 1905. Piano arrangement (without 2a) in 1905: arrangement of part 4 for song and piano (Les trois soeurs aveugles) 1905.

Op. 47  Violin concerto in D minor
Piano score 1905.

Op. 48  Vapautettu kuningatar (The Liberated Queen), ballad
Arrangement for male choir and orchestra 1910.

Op. 51  Belsazars gästabud (Belshazzar's Feast) incidental music
Arrangement for song and piano of 2b (Solitude) in 1939. Arrangement for orchestra (suite op. 51): 1. Orientalisk marsch (Oriental march), 2. Solitude, 3. Nocturne, 4. Khadras dans (Khadra's Dance); completed in 1907. Piano arrangement 1907.

Op. 53a  Pan och Echo (Pan and Echo), Dance Intermezzo
Piano arrangement in 1907.

Op. 54  Svanevit (Swanwhite) incidental music
Arrangement for orchestra (suite op. 54): Påfågeln (The Peacock), 2. Harpan (The Harp), 3. Tärnorna med rosor (The Maidens with Roses), 4. Hör rödhaken slå (Hark, the Robin), 5. Prinsen allena (The Prince alone), 6. Svanevit och prinsen (Swanwhite and the Prince), 7. Lovsång (A Song of Praise). Completed in 1909.

Op. 57 no. 6  Hertig Magnus
Orchestral song arrangement 1912

Op. 60 no. 1 Kom nu hit, död (Come Away, Death!)
Arrangement for voice, harp and strings in 1957

[Op. 65b]  The bell melody of Kallio church
Arrangement for mixed-voice choir (Kellosävel Kallion kirkossa, op. 65b) 1912. Words by Julius Engström; also with other words (Päättyy työ, joutuu yö) by Heikki Klemetti. Piano arrangement Kallion kirkon kellosävel (Bell Melody of Kallio Church) in 1912.

Op. 70  Luonnotar (Daughter of Nature), symphonic poem
Arrangement for voice and piano in 1915.

Op. 71  Scaramouche, music for Poul Knudsen's tragic pantomime
Two piano arrangements of part of the music (Danse élégiaque and Scène d’amour) in 1914, arrangement for violin and piano (Scène d’amour) in 1925.

Op. 77 no. 1 Laetare anima mea (Cantique)
Arrangement for violin or cello and piano 1915.

Op. 77 no. 2  Devotion (Ab imo pectore)
Arrangement for violin or cello and piano 1915.

Op. 83  Everyman (Jedermann) incidental music
Three piano arrangements of part of the music (Episodio, Scèna and Canzone) in 1925-26.

Op. 91a  Jääkärien marssi (The Jäger March) for male choir and piano
Arrangement for orchestra and male voices ad lib 1918

Op. 91b  Partiolaisten marssi for piano with text
Arrangement for mixed-voice choir and orchestra in 1918, arrangement for mixed-voice choir and piano in 1921, arrangement for two female voices and piano (The World Song of Girl Guides and Girl Scouts) in 1951-52.

Op. 96a  Valse lyrique for piano          
Arrangement for orchestra in 1920.

Op. 96b  Autrefois (Scène pastorale) for orchestra and two sopranos ad lib.
Piano arrangement in 1920.

Op. 96c  Valse chevaleresque for piano
Arrangement for orchestra in 1921.

Op. 98a  Suite mignonne for two flutes and strings
1. Petite scène, 2. Polka, 3. Épilogue. Piano arrangement in 1921.

Op. 98b  Suite champêtre for string orchestra:
1. Pièce caractéristique, 2. Mélodie élégiaque, 3. Danse. Piano arrangement in 1923.

Op. 100  Suite caractéristique for harp and strings
1. Vivo, 2. Lento, 3. Comodo. Piano arrangement in 1922.

Op. 109  Stormen (The Tempest), incidental music

Arrangement for orchestra (Overture, op. 109 no. 1); completed in 1927.

Arrangement for orchestra (suite no. 1, op. 109 no. 2): 1. Der Eichbaum (The Oak), 2. Humoreske, 3. Caliban's Lied, 4. Die Herbstmänner (The Harvesters), 5. Canon, 6. Scéne, 7. Intrada - Berceuse, 8. Zwischenspiel - Ariels Lied, 9. Der Sturm (The Tempest); completed in 1927. Piano arrangement of number 6 (Scéne) 1927.

Arrangement for orchestra (suite no. 2, op.109 no. 3)
1. Chor der Winde (Chorus of the Winds), 2. Intermezzo, 3. Tanz der Nymphen (Dance of the Nymphs), 4. Prospero, 5. Lied I - Lied II (songs I and II), 6. Miranda, 7. Die Najaden (The Naiads), 8. Tanz-Episode (Dance Episode). Piano arrangement of the impromptus 3 and 6 (Tanz der Nymphen and Episode [Miranda]) 1927.

Op. 113 no. 6  Salem
Arrangement for male choir and orchestra (Processional: Onward, Ye Peoples) 1938.

Aamusumussa (In morning mist) for mixed-voice choir
Arrangement for children's choir 1913 (?).

Ack, hör du fröken Gyllenborg, folk song arrangement for mixed-voice choir
Completed in 1888-89.

Andante for piano
Arrangement for harmonium and piano (Andante cantabile) 1887 (?).

Andante festivo for string quartet
Arrangement for strings and timpani ad lib. 1938. Also under opus number 117.

Carminalia, arrangements of three songs in Latin for children's choir and piano or harmonium
1. Ecce novum gaudium, 2. Angelus emittitur, 3. In stadio laboris. 1898.

Ett ensamt skidspår (A Solitary Ski Track) for narrator and piano
Arrangement for narrator, harp and strings in 1957.

Isänmaalle for mixed-voice choir
Arrangement for male choir in 1908.

Ohi ‘Caroli’ and Trippole, Trappole
Two arrangements of Italian songs for mixed-voice choir and instruments 1897-98. instrumental parts missing.

Cantata for the Graduate and Master's Degree Ceremony of 1894
Arrangement for mixed-voice choir (Festive March) 1896.

Cantata for the Graduate and Master's Degree Ceremony of 1897
Arrangements for mixed-voice choir in 1898 (?) op. 23: no. 1  Me nuoriso Suomen, no. 2  Tuuli tuudittele, no. 3  Oi toivo, toivo sä lietomieli, no. 4  Montapa elon merellä, no. 5  Sammuva sainio maan, no. 6a  Soi kiitokseksi Luojan, no. 6b  Tuule, tuuli, leppeämmin, no. 7  Oi lempi, sun valtas ääretön on, no. 8  Kuin virta vuolas, no. 9  Oi kallis Suomi, äiti verraton.

Cantata for the coronation ceremony of Tsar Nicholas II
Has been performed without choir: Kröningsmarsch (Coronation March). Arrangement for children's choir (Hail, O Princess), 1913?

Laulun mahti
Arrangement of a ballad by Jãzeps Vïtols for male choir Completed in 1895.

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

Morceau romantique sur un motif de M Jakob de Julin
Piano arrangement 1925.

Porilaisten marssi (regimental march of the Pori infantry regiment)
Arrangement for a small (?) orchestra 1892. Missing.

Porilaisten marssi (regimental march of the Pori infantry regiment)
Arrangement for orchestra 1900.

Rakastava (The Lover), cycle for male choir
1. Miss’ on kussa minun hyväni, 2. Eilaa, eilaa, 3. Hyvää iltaa lintuseni, 4. Käsi kaulaan, lintuseni. Arrangement for male choir and string orchestra, arrangement for mixed-voice choir in 1898. (See also op. 14.)

Siltavahti (The Bridge Keeper) for male choir
Arrangement for solo song (with piano) in 1928.

Finnish folk songs
1. Minun kultani, 2. Sydämestäni rakastan, 3. Ilta tulee, ehtoo joutuu, 4. Tuopa tyttö, kaunis tyttö, 5. Velisurmaaja, 6. Häämuistelma.
Arrangements for piano. Completed in 1903.

Tule, tule, kultani
Folk song arrangement. completed in 1892.

Sources:

The following works have been used as sources for this list:

• Fabian Dahlström: The Works of Jean Sibelius. Sibelius-Seura ry. 1987.
• Glenda Dawn Goss (ed.): The Sibelius Companion. Westport, Connecticut - London: Greenwood Press. 1996.
• Kari Kilpeläinen: The Jean Sibelius Musical Manuscript at Helsinki University Library. Wiesbaden (etc.): Breitkopf & Härtel. 1991.
• The New Grove Dictionary of Music and Musicians.