Symphony No. 9 in C major, K. 73/75a, by Wolfgang Amadeus Mozart

Wolfgang Amadeus Mozart

Wolfgang Amadeus Mozart , baptismal name Johannes Chrysostomus Wolfgangus Theophilus Mozart , was a prolific and influential composer of the Classical era. He composed over 600 works, many acknowledged as pinnacles of symphonic, concertante, chamber, piano, operatic, and choral music...

, has an uncertain provenance. The most likely date of its composition appears to be late 1769 or 1770, during Mozart's first Italian

Italy

Italy , officially the Italian Republic languages]] under the European Charter for Regional or Minority Languages. In each of these, Italy's official name is as follows:;;;;;;;;), is a unitary parliamentary republic in South-Central Europe. To the north it borders France, Switzerland, Austria and...

 journey, although some authorities have dated it "probably not before early summer 1772". It may have been started in Salzburg

Salzburg

-Population development:In 1935, the population significantly increased when Salzburg absorbed adjacent municipalities. After World War II, numerous refugees found a new home in the city. New residential space was created for American soldiers of the postwar Occupation, and could be used for...

 before the first Italian journey began, and completed during the trip. The symphony is in four movements

Movement (music)

A movement is a self-contained part of a musical composition or musical form. While individual or selected movements from a composition are sometimes performed separately, a performance of the complete work requires all the movements to be performed in succession...

, and is Mozart's first in the key of C major. There is no information concerning which of the many Italian concerts given by the Mozarts during this visit saw this symphony's first performance. The autograph score is today preserved in the Biblioteka Jagiellońska in Kraków

Kraków

Kraków also Krakow, or Cracow , is the second largest and one of the oldest cities in Poland. Situated on the Vistula River in the Lesser Poland region, the city dates back to the 7th century. Kraków has traditionally been one of the leading centres of Polish academic, cultural, and artistic life...

.

Movements and instrumentation

The symphony is score for 2 flute

Flute

The flute is a musical instrument of the woodwind family. Unlike woodwind instruments with reeds, a flute is an aerophone or reedless wind instrument that produces its sound from the flow of air across an opening...

s, 2 oboe

Oboe

The oboe is a double reed musical instrument of the woodwind family. In English, prior to 1770, the instrument was called "hautbois" , "hoboy", or "French hoboy". The spelling "oboe" was adopted into English ca...

s, bassoon

Bassoon

The bassoon is a woodwind instrument in the double reed family that typically plays music written in the bass and tenor registers, and occasionally higher. Appearing in its modern form in the 19th century, the bassoon figures prominently in orchestral, concert band and chamber music literature...

, 2 horns

Horn section

In music, a horn section can refer to several groups of musicians. It can refer to the musicians in a symphony orchestra who play the horn . In a British-style brass band it refers to the tenor horn players. In popular music, it can also refer to a small group of wind instrumentalists who augment a...

, 2 trumpet

Trumpet

The trumpet is the musical instrument with the highest register in the brass family. Trumpets are among the oldest musical instruments, dating back to at least 1500 BCE. They are played by blowing air through closed lips, producing a "buzzing" sound which starts a standing wave vibration in the air...

s, timpani

Timpani

Timpani, or kettledrums, are musical instruments in the percussion family. A type of drum, they consist of a skin called a head stretched over a large bowl traditionally made of copper. They are played by striking the head with a specialized drum stick called a timpani stick or timpani mallet...

, harpsichord

Harpsichord

A harpsichord is a musical instrument played by means of a keyboard. It produces sound by plucking a string when a key is pressed.In the narrow sense, "harpsichord" designates only the large wing-shaped instruments in which the strings are perpendicular to the keyboard...

 and string

String section

The string section is the largest body of the standard orchestra and consists of bowed string instruments of the violin family.It normally comprises five sections: the first violins, the second violins, the violas, the cellos, and the double basses...

s.
There are four movements.

1. Allegro, 4/4
2. Andante, 2/4
3. Menuetto
   Minuet
   A minuet, also spelled menuet, is a social dance of French origin for two people, usually in 3/4 time. The word was adapted from Italian minuetto and French menuet, and may have been from French menu meaning slender, small, referring to the very small steps, or from the early 17th-century popular...
   
    and Trio
   Ternary form
   Ternary form, sometimes called song form, is a three-part musical form, usually schematicized as A-B-A. The first and third parts are musically identical, or very nearly so, while the second part in some way provides a contrast with them...
   
   , 3/4
4. Molto allegro, 2/4

Sources

• Zaslaw, Neal
  Neal Zaslaw
  Neal Zaslaw is an American musicologist.Born in New York, Zaslaw graduated from Harvard in 1961 with a BA and obtained his master's from Juilliard in 1963. He played flute in the American Symphony Orchestra under Leopold Stokowski from 1962 to 1965. In 1970 he received his Ph.D from Columbia...
  
  : Mozart's Symphonies: Context, Performance Practice, Reception OUP, Oxford 1991 ISBN 0-19-816286-3