The numbers of Beethoven's works are compiled by the publishers of his works. Therefore, the numbers are arranged in the order of publication, not in the order of writing. For example, the woodwind octet created in 1792 is Op.13, while Op.12 and Op.14 were created in 1815 and 1817 respectively. The works before No.135 were published by Beethoven during his lifetime. Others were published after his death.
Op.1No1 (1795) Piano Trio No.1 in E flat major
Op.1No2 (1795) Piano Trio No.2 G major
Op.1No3 (1795) Piano Trio No.3 C minor
Op.2No1 (1796). Piano Sonata No.1 F minor
Op.2 No.2 (1796) Piano Sonata No.2 A major
Piano Sonata No.3 C major
Op.3 (1794) String Trio No.1 in E flat major
Op.4 (1795). String quintet in E flat major
Op.5 NO.1 (1796) Sonata for Piano and Cello No.1 F major
Op.5 NO.2 (1796) Sonata for Piano and Cello No.2 G minor
Op.6 (1797) Piano Sonata for Four Hands
Op.7 (1797). Piano Sonata No.4 in E flat major
Op.8 (1797) String Trio (Serenade) No.1 D major
Op.9No1 (1798) String Trio No.2 G major
Op.9No2 (1798) String Trio No.3 D major
Op.9No3 (p) String trio No.4 C minor
Op.1NO.1 (1798) Piano Sonata No.5 C minor
Piano Sonata No.6 F major
Piano Sonata No.7 D major
Op.11 (1798). Piano Trio No.4 in B flat major
Op.12 NO.1 (1798) Violin Sonata No.1 D major
Violin Sonata No.2 A major
Op.12 NO.3 (1798) Violin Sonata No.3 in E flat major
Op.13 (1799) Piano Sonata No.8 C minor "Sorrow"
Piano Sonata No.14NO.1 (1799) Piano Sonata No.9 E major
Piano Sonata No.1 G major
Op.15. Piano Concerto No.1 C major
Op.16 (1796) quintet piano and wind instruments
Op.17 (18) French horn sonata in F major
Op.18 NO.1 (18) String Quartet No.1 F major
Op.18 NO.2 (18). String Quartet No.2 G major
Op.18 NO.3 (18) String Quartet No.3 D major
Op.18 NO.4 (18) String Quartet No.4 C minor
Op.18 NO.5 (18). String Quartet No.5 A major
Op.18 No.6 (18) String Quartet No.6 in B flat major
Piano Concerto No.2 B flat major
Op.2 (1799) Septet E flat major
Op.21 (18). Symphony No.1 C major
op.22 (18) piano sonata No.11 B flat major
op.23 (181) violin sonata No.4 A minor
op.24 (181) violin sonata No.5 F major spring ("Spring")
op.25 (181 Serenade flute in d major, Violin and Viola
Op.26 (181) Piano Sonata No.12 in A flat major
Op.27NO.1 (181) Piano Sonata No.13 in E flat major
Piano Sonata No.27NO.2 (181) Piano Sonata No.14 in C minor "Moonlight"
Op.28 (181 Piano Sonata No.15 D
Op.29 (181) String Quintet in C
Op.3No1 (183) Violin Sonata No.6 A
Op.3NO2 (183) Violin Sonata No.7 C Minor
Op.3No3 (183). Violin sonata No.8 G major
Op.31NO.1 (182) Piano sonata No.16 G major
Op.31NO.2 (182) Piano sonata No.17 D minor "Storm"
Op.31NO.3 (182). Piano sonata No.18 E in flat major
Op.32 (185) Song-To Hope
Op.33 (182) Seven Small Piano Ops
Op.34 (182) 6 Variations Piano on an original theme,
op. 35 (182) 15 Variations and fugue piano in F major, "Heroic Erotica" in E flat major
Op.36 (183) Symphony No.2 D major
Piano Concerto No.3 C minor
Op.38 (183) Piano Trio No.8 (Arrangement of the Septet Op.2).
Op.39 (1789) contains two preludes, including Piano in 12 major
Op.4 (182) Romance Violin in G major
Op.41 (183) Serenade Piano and Flute or Violin in D major
Op.42 (183) Serenade Viola and Piano in D major
Op.43. Prometheus' Creation * Overture and Ballet Music
Op.44 (1792) Piano Trio No.1 (Variations on an original theme in E flat major)
Op.45 (183) Three March pianos, Four-handed piano
Op.46 (1795) Song-Adelaide
Op.47 (182) Violin Sonata No.9 A Croce ("Kreutzer")
Op.48 No.1 (182) Song-Request
Op.48 No.2 (182) ? 1chsten
Op.48no3 (182) Song-On Death
Op.48no4 (182) Song-Glory of the Lord in Nature
Op.48no5 (182) Song-Gottes Macht und Vorsehung
Op.48no6 (182) Song-Bu? ? 8lied
Op. 49 no 1 (1792) Piano Sonata No.19 G minor
Op. 49 no 2 (1792) Piano Sonata No.2 G major
Op. 5 (1798) Romance Violin F major
Op. 51 no 1 (1797). Rondo for Piano in C Major
Op. 51 no 2 (1798) Rondo for Piano in G Major
Op. 52 no 1 (185) Song-Urians Reise um die Welt
Op. 52 no 2 (185). Song-Feuerfab
Op. 52 no 3 (185) Song-Das Liedchen von der Ruhe
Op. 52 no 4 (185) Song-May Song
Op. 52 no 5 (185) Song-Mollys Abschied
Op.52No6 (185) Song-Love
Op.52No7 (185) Song-Marmote
Op.52No8 (185) Song-Das Blümchen Wunderhold
Op.53 (183) Piano Sonata No.21 C "Dawn Waldstein"
Op.54 (184) Piano Sonata No.22 F
Op.55 (185). Symphony No.3 "Heroic Erotica" in E flat major
Op.56 (185) Triple Concerto in C major
Piano Sonata No.23 F minor "Enthusiastic Appassionata"
Op.58 (187). Piano Concerto No.4 G major
Op.59 NO.1 (186) String Quartet No.7 F major "Rasmussen 1"
Op.59 NO.2 (186) String Quartet No.8 E minor" Rasmussen 2"
Op.59 NO.3 (186). String Quartet No.9 "Rasmussen 3" in C major
Op.6 (187) Symphony No.4 in B flat major
Violin Concerto No.61 (188) in D major
Op.62 (187) Corioland Overture
Op.63 (186) String Quintet (Op. Piano Trio
Op.64 (187) Piano Trio (arranged version of Op.3) Piano, Violin and Cello
Op.65 (1796) Aria-Ah perfido!
Op.66 (1796) Variations on Mozart's theme "A Girl or a Woman", Cello Op.67 (188) Symphony No.5 C minor
Symphony No.6 F major Pastoral ("Pastoral")
Op.69 (188) Cello No.3 A major
Op.7no1 (188) Piano Trio No.5 D major "Ghost"
Op.7no2 (188) Piano Trio No.6 in E flat major
Op.71 (1796) Wind Quartet in E flat major
Op.72a (185). Opera-Leonora (overture Leonora No.2)
Op.72b (186) Opera-Leonora (overture Leonora No.3)
Op.72c (1814) Opera-Federio
Op.73 (189). Piano Concerto No.5 "Emperor Emperor" in E flat major
Op.74 (189) String Quartet No.1 "Harp" in E flat major
Op.75 NO.1 (189) Song-Mi Niang
Op.75 NO.2 (189) Song-New Love, A new life
Op.75 No.3 (189) Song-Word: Goethe Faust * Once upon a time there was a king
Op.75 No.4 (189) Song-Gretel's Warning
Op.75 No.5 (189) Song-To a far-away lover
Op.75 No.6 (189) Song-Der Zufriedene
Op. 76 (189) 6 Variations on piano on an original theme,
Op. 77 (189) Piano Fantasia
Op. 78 (189) Piano Sonata No.26 in F major
Piano Sonata No.79 (189) in G major
Op. 8 (188) Choral Fantasia
Op. 81a (189)