Piano Sonata No. 16 in C Major (โFacileโ) - The Story
by Wolfgang Amadeus Mozart
Historical Background
Mozart composed his Piano Sonata No.16 in C major, K.545, in Vienna on June 26, 1788โthe same day he finished Symphony No.39 . He described it as โeine kleine Klavier Sonate fรผr Anfรคngerโ (โa little piano sonata for beginnersโ) , signaling a work of modest scale. The sonata was neither published in his lifetime nor intended as a major concert piece but likely for students or amateurs.
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This simplicity contrasted sharply with Mozartโs strained circumstances. In 1788, amid the Austro-Turkish Warโs economic slump, he sought loans from his friend Michael Puchberg, confessing on 17 June: โI have now opened my whole heart to youโฆโ . Although still living expensively, his financial anxiety was genuine . Scholars suggest K.545 might have been written for the amateur market or to supply his pupils.
The year also marked personal change. His father Leopold had died in 1787, and Mozartโs ties with his sister Nannerl had cooled. His last surviving letter to her (2 August 1788) apologizes for silence and promises โmy very latest compositions for the keyboardโ . K.545, possibly sent with other works, may have been a musical gift to Nannerl . This intimate domestic use contrasts with his simultaneous labor on the monumental final symphonies.
The autograph manuscript is lost, and thereโs no record of a premiere. Piano sonatas then typically served as teaching and home entertainment. By 1788 Mozart had not issued a new solo sonata for years, and K.545โs bright C-major style is a deliberate return to simplicity. Published only posthumously in February 1805 as โSonate facile pour le Pianoforteโ, it quickly attracted the expanding student market. Early editions proliferated, even though Breitkopf & Hรคrtelโs complete works initially omitted it . The Sonata Facile thus bridges Mozartโs late period grandeur and his lifelong knack for graceful, approachable keyboard music.
Analysis
General Character: Sonata Facile is light, lucid, and about 10โ12 minutes long. Its transparency hides structural sophistication, embodying Artur Schnabelโs remark that Mozartโs sonatas are โtoo easy for children and too difficult for artistsโ . Beneath its tuneful surface, it teaches phrasing, balance, and classical proportion.
Allegro (C major): In clear sonata form, the first movement opens with a triadic melody over an Alberti bass. A brief bridge modulates to G major for the second theme, then repeats. The development is concise, touching G minor and sequencing fragments. Unusually, Mozart restarts the recapitulation in F majorโthe subdominantโbefore returning to C, an innovation rare in 1788 but later embraced by Schubert .
Andante (G major): The slow movement offers a lyrical cantabile style marked dolce. Structurally itโs a small sonata or ternary form. After a serene G-major theme, Mozart explores minor keys (notably G minor, B-flat, C minor) for brief depth before returning to G major .
Rondo: Allegretto (C major): The finaleโs rondo alternates a playful refrain with contrasting episodes. First comes a G-major section featuring more Alberti bass ; then a minor-key episode (A minor and beyond) injects sparkle and harmonic adventure . A short coda rounds off the cheerful close.
Legacy and Influence
Published posthumously in 1805, K.545 became a staple of piano teaching, balancing accessibility with artistry. Its melodies entered popular culture (even Looney Tunesโ โGrannyโ theme) and professionals continue to record it, proving its depth beyond pedagogy .
The sonata also inspired later treatments. Edvard Grieg in 1877 created two-piano versions of several Mozart sonatas, including K.545, adding Romantic harmonies to โappeal to our modern earsโ . Such adaptations underline the pieceโs enduring charm. Today it remains a universal entry point to Mozartโs keyboard style and a benchmark of Classical clarity, still testing the artistry of even seasoned performers.
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Sources
Sheet Music
Download and print sheet music for Piano Sonata No. 16 in C Major (โFacileโ) - The Story from Virtual Sheet Musicยฎ.
Wolfgang Amadeus Mozart โ Letter to Maria Anna von Berchtold (Nannerl) in St. Gilgen, 2 August 1788. English translation in Emily Anderson (ed.), The Letters of Mozart and His Family, vol. III (London: Macmillan, 1938), p. 1364โ1366. (Mozart apologizes for not writing and promises to send โmy very latest compositions for the keyboardโ to his sister.)
Charles Rosen โ The Classical Style: Haydn, Mozart, Beethoven (W.W. Norton, rev. ed. 1997), p. 52. (Analysis of Mozartโs unconventional use of the subdominant in the K.545 recapitulation, noting it was rare for its time.)
Dennis Pajot โ โK545 Sonate facile pour le pianoforte in C.โ MozartForum (archived article, 2007). (Detailed notes on the sonataโs composition date from Mozartโs catalogue, the 1805 first edition titled Sonate facile, subsequent early editions, and the missing autograph manuscript.)
Artur Schnabel (1882โ1951), as quoted in Los Angeles Philharmonic program notes, Mozart: Sonata in C, K.545. (Schnabelโs famous remark that Mozartโs sonatas are โtoo easy for children and too difficult for artists,โ emphasizing the interpretive challenge of seemingly simple music.)
Harold C. Schonberg โ The Great Pianists (New York: Simon & Schuster, 1963), p. 72. (Discusses the lasting popularity of Mozartโs easier piano works and mentions Edvard Griegโs 1877 arrangements of Mozart sonatas to appeal to Romantic tastes, including a quote about โappealing to our modern ears.โ)