Piano Sonata No. 2 in A-flat major, Op. 39
E841529
Piano Sonata No. 2 in A-flat major, Op. 39 is a virtuosic early Romantic piano work by Carl Maria von Weber, noted for its brilliant keyboard writing and expressive contrasts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Piano Sonata No. 2 in A-flat major, Op. 39 canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10126705 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Piano Sonata No. 2 in A-flat major, Op. 39 Context triple: [Carl Maria von Weber, notableWork, Piano Sonata No. 2 in A-flat major, Op. 39]
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A.
Piano Sonata No. 2 in B-flat minor, Op. 36
Piano Sonata No. 2 in B-flat minor, Op. 36 is a large-scale, virtuosic and emotionally intense piano work by Sergei Rachmaninoff, noted for its sweeping Romantic lyricism and technical demands.
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B.
Piano Sonata No. 2 in F-sharp minor, Op. 2
Piano Sonata No. 2 in F-sharp minor, Op. 2 is an early piano sonata by Alexander Scriabin that showcases his emerging Romantic and virtuosic style.
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C.
Piano Sonata No. 3
Piano Sonata No. 3 is a modernist piano composition by Mexican composer Carlos Chávez, noted for its rhythmic vitality and distinctive 20th-century harmonic language.
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D.
Piano Sonata No. 7 in B-flat major
Piano Sonata No. 7 in B-flat major is a powerful and rhythmically driven piano work by Sergei Prokofiev, renowned as one of his three "War Sonatas" and a landmark of 20th-century piano repertoire.
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E.
Piano Sonatas, Op. 26
Piano Sonatas, Op. 26 is a set of keyboard sonatas by Muzio Clementi that exemplifies his influential Classical-era style and technical innovation for the piano.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Piano Sonata No. 2 in A-flat major, Op. 39 Target entity description: Piano Sonata No. 2 in A-flat major, Op. 39 is a virtuosic early Romantic piano work by Carl Maria von Weber, noted for its brilliant keyboard writing and expressive contrasts.
-
A.
Piano Sonata No. 2 in B-flat minor, Op. 36
Piano Sonata No. 2 in B-flat minor, Op. 36 is a large-scale, virtuosic and emotionally intense piano work by Sergei Rachmaninoff, noted for its sweeping Romantic lyricism and technical demands.
-
B.
Piano Sonata No. 2 in F-sharp minor, Op. 2
Piano Sonata No. 2 in F-sharp minor, Op. 2 is an early piano sonata by Alexander Scriabin that showcases his emerging Romantic and virtuosic style.
-
C.
Piano Sonata No. 3
Piano Sonata No. 3 is a modernist piano composition by Mexican composer Carlos Chávez, noted for its rhythmic vitality and distinctive 20th-century harmonic language.
-
D.
Piano Sonata No. 7 in B-flat major
Piano Sonata No. 7 in B-flat major is a powerful and rhythmically driven piano work by Sergei Prokofiev, renowned as one of his three "War Sonatas" and a landmark of 20th-century piano repertoire.
-
E.
Piano Sonatas, Op. 26
Piano Sonatas, Op. 26 is a set of keyboard sonatas by Muzio Clementi that exemplifies his influential Classical-era style and technical innovation for the piano.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
musical composition
ⓘ
piano sonata ⓘ |
| catalogueNumber | Op. 39 ⓘ |
| characteristic | expressive contrasts ⓘ |
| composer | Carl Maria von Weber NERFINISHED ⓘ |
| composerNationality | German ⓘ |
| countryOfOrigin | Germany ⓘ |
| dedicatedTo | Caroline von Weber NERFINISHED ⓘ |
| era | early 19th century ⓘ |
| form | sonata ⓘ |
| genre |
early Romantic music
ⓘ
piano music ⓘ |
| harmonicLanguage | Romantic tonality with chromaticism ⓘ |
| hasExpressiveSlowMovement | true ⓘ |
| hasPart |
first movement
ⓘ
fourth movement ⓘ second movement ⓘ third movement ⓘ |
| hasVirtuosicPassages | true ⓘ |
| instrumentation | solo piano ⓘ |
| isForSoloist | true ⓘ |
| key | A-flat major ⓘ |
| languageOfTitle | German ⓘ |
| mainThemeInstrument | piano ⓘ |
| movement |
I. Allegro moderato
ⓘ
II. Andante ⓘ III. Menuetto ⓘ IV. Rondo ⓘ |
| movementCount | 4 ⓘ |
| notableFeature |
contrasting lyrical and brilliant sections
ⓘ
demanding passagework ⓘ wide dynamic range ⓘ |
| opusNumber | Op. 39 ⓘ |
| originalTitle | Sonate für das Pianoforte Nr. 2 As-dur, Op. 39 NERFINISHED ⓘ |
| performancePractice | concert repertoire ⓘ |
| period | Romantic era ⓘ |
| relatedWorkByComposer |
Piano Sonata No. 1 in C major, Op. 24
NERFINISHED
ⓘ
Piano Sonata No. 3 in D minor, Op. 49 NERFINISHED ⓘ Piano Sonata No. 4 in E minor, Op. 70 NERFINISHED ⓘ |
| requiresSkillLevel | advanced pianist ⓘ |
| rhythmicCharacter | contrasting rhythmic figurations ⓘ |
| style |
brilliant keyboard writing
ⓘ
virtuosic ⓘ |
| texture | predominantly homophonic ⓘ |
| tonality | major ⓘ |
| typicalPerformanceDuration | approximately 25 minutes ⓘ |
| workTitleNumber | 2 ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Piano Sonata No. 2 in A-flat major, Op. 39 Description of subject: Piano Sonata No. 2 in A-flat major, Op. 39 is a virtuosic early Romantic piano work by Carl Maria von Weber, noted for its brilliant keyboard writing and expressive contrasts.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.