Sonata quasi una fantasia
E281074
"Sonata quasi una fantasia" is the original descriptive title given by Beethoven to his Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2, later famously nicknamed the "Moonlight" Sonata.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Sonata quasi una fantasia canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T2577230 — 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: Sonata quasi una fantasia Context triple: [Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2 "Moonlight", originalDesignation, Sonata quasi una fantasia]
-
A.
Sonata
Sonata is the internal codename used by Apple for the Mac OS 9 operating system.
-
B.
Concerto in F
Concerto in F is a three-movement jazz-influenced classical concerto for piano and orchestra by American composer George Gershwin, first performed in 1925.
-
C.
Piano Concerto in G major
The Piano Concerto in G major is a vibrant, jazz-influenced orchestral work by Maurice Ravel, celebrated for its brilliant piano writing, colorful orchestration, and blend of playful energy with lyrical beauty.
-
D.
Piano Concerto No. 21 in C major
Piano Concerto No. 21 in C major is one of Mozart’s most celebrated piano concertos, renowned for its lyrical slow movement and elegant Classical style.
-
E.
Moonlight Sonata
Moonlight Sonata is the codename given by Nazi Germany to the devastating Luftwaffe air raid on the English city of Coventry during World War II.
- 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: Sonata quasi una fantasia Target entity description: "Sonata quasi una fantasia" is the original descriptive title given by Beethoven to his Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2, later famously nicknamed the "Moonlight" Sonata.
-
A.
Sonata
Sonata is the internal codename used by Apple for the Mac OS 9 operating system.
-
B.
Concerto in F
Concerto in F is a three-movement jazz-influenced classical concerto for piano and orchestra by American composer George Gershwin, first performed in 1925.
-
C.
Piano Concerto in G major
The Piano Concerto in G major is a vibrant, jazz-influenced orchestral work by Maurice Ravel, celebrated for its brilliant piano writing, colorful orchestration, and blend of playful energy with lyrical beauty.
-
D.
Piano Concerto No. 21 in C major
Piano Concerto No. 21 in C major is one of Mozart’s most celebrated piano concertos, renowned for its lyrical slow movement and elegant Classical style.
-
E.
Moonlight Sonata
Moonlight Sonata is the codename given by Nazi Germany to the devastating Luftwaffe air raid on the English city of Coventry during World War II.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
musical work
ⓘ
piano sonata ⓘ |
| alsoKnownAs |
Moonlight Sonata
ⓘ
Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2 "Moonlight" ⓘ
surface form:
Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2
|
| approximateCompositionPeriod | circa 1801 ⓘ |
| approximatePublicationYear | 1802 ⓘ |
| catalogueDesignation | Beethoven piano sonata ⓘ |
| composer | Ludwig van Beethoven ⓘ |
| countryOfOrigin | Austria ⓘ |
| dedicatedTo | Countess Giulietta Guicciardi ⓘ |
| dedicationType | aristocratic patron ⓘ |
| descriptiveMeaning | sonata in the manner of a fantasy ⓘ |
| famousFor |
its atmospheric first movement
ⓘ
its unconventional structure for a sonata ⓘ |
| firstMovementTempoMarking | Adagio sostenuto ⓘ |
| genre | classical music ⓘ |
| historicalSignificance | one of Beethoven’s most popular piano works ⓘ |
| influenced | Romantic piano repertoire ⓘ |
| instrumentation | solo piano ⓘ |
| key | C-sharp minor ⓘ |
| keyOfFirstMovement | C-sharp minor ⓘ |
| keyOfSecondMovement | D-flat major ⓘ |
| keyOfThirdMovement | C-sharp minor ⓘ |
| movementCount | 3 ⓘ |
| movementOrder | Adagio sostenuto – Allegretto – Presto agitato ⓘ |
| nicknameGivenBy | Ludwig Rellstab ⓘ |
| nicknameOrigin | likened to moonlight shining on Lake Lucerne ⓘ |
| notableFeature |
continuous triplet accompaniment in first movement
ⓘ
virtuosic and stormy finale ⓘ |
| opusNumber | Op. 27 No. 2 ⓘ |
| originalTitleOf |
Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2 "Moonlight"
ⓘ
surface form:
Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2
|
| pairingNote | one of two sonatas labeled quasi una fantasia in Op. 27 ⓘ |
| partOf |
Opus 27 No. 2
ⓘ
surface form:
Opus 27
|
| performanceMedium |
concert performance
ⓘ
private salon performance ⓘ |
| period | Classical period ⓘ |
| placeOfComposition | Vienna ⓘ |
| relatedWork |
Piano Sonata No. 13 in E-flat major, Op. 27 No. 1 "Quasi una fantasia"
ⓘ
surface form:
Piano Sonata No. 13 in E-flat major, Op. 27 No. 1
|
| secondMovementTempoMarking | Allegretto ⓘ |
| structureNote | slow movement placed first ⓘ |
| style | early Romantic character within Classical form ⓘ |
| thirdMovementTempoMarking | Presto agitato ⓘ |
| titleLanguage | Italian ⓘ |
| typicalDuration | approximately 15 minutes ⓘ |
| workNumber | Piano Sonata No. 14 ⓘ |
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: Sonata quasi una fantasia Description of subject: "Sonata quasi una fantasia" is the original descriptive title given by Beethoven to his Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2, later famously nicknamed the "Moonlight" Sonata.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
Piano Sonata No. 14 in C-sharp minor, Op. 27 No. 2 "Moonlight"
→
originalDesignation
→
Sonata quasi una fantasia
ⓘ