Piano Piece

  I will introduce "Nocturne op.9-2" and "Piano sonata K.331" from the piano piece. It is both tunes that everyone has heard somewhere.

Nocturne op.9-2

 This music was composed by Frederic Francois Chopin. This music was made in 1832, when Chopin was 22 years old.

  

  Chopin made 21 nocturnes. Only 20 in that were specified for “Nocturne” by him. However, only the C sharp minor of existing music in 1830 was allowed the title as “Nocturne” at the time of making in 1875 public.

  

   Nocturne op.9-2 is the most famous music in his nocturne. This music undertook other composer’s influences with Nocturne op.9-1.

  

  The composition of this music is a rondo style form. This music is 12/8 rhythms in Andante^[1] in E flat major.

 A-B-A-B-A-C-C

There are two themes of A and B, and it is repeated alternately. There finishes is different theme C at the end. The right hand chants from beginning to end the coloratura style^[2] to attaching of the grace note, and the accompaniment of the same rhythm is repeated as for the left hand.

Piano Sonata K.331

 This tune was composed by Wolfgang Amadeus Mozart. The made time is not understood well. There is a theory of composition in Paris at 1778, when Mozart was 22 years old or a theory of composition in Vienna at 1783, when he was 28 years old. The powerful one is a theory composed in 1783. This music is the second of three sonatas assumed to have been made in the age. This music consists of three movements. The rough composition is as follows.

  

  The first movement consists of the subject and the variations of andante grazioso. The second movement is a minuet of the trio luck. It is recorded though the third movement is an allegretto, "Rondo alla turca". The style of the east style at that time is remarkable.

  The first movements are 6/8 rhythms in A major. It consists of the subject and the variation. The subject of andante grazioso is two composition in the first half and the latter half. It was graceful though was simple. The style at this time is reflected. In the first variation, the movement of the sixteenth note^[3] is a center. As for the second variation, the accompaniment of three group notes^[4] feature. The third variation is transposed to the in A minor. The fourth variation returns to the in A major. The accompaniment is played by the right hand, and the high pitched sound part and the basso are played by the left hand. As for the fifth variation, it not only accompanies but also the tempo begins to change into the Adagio^[1], and to move in the right hand three minims. The sixth variation becomes 4/4 rhythms Allegro^[1]. It becomes a light, bright variation.

  

 The second movements are 3/4 rhythms in A minor in the minuet. The large-scale trio is lucky. The subject of the minuet starts by the unison of solo. The trio transposes in D major. The left hand intersects with the right hand, and has inserted the unison.

  

 The third movements are 2/4 rhythms in A minor in the Allegretto^[1] (rondo alla turca). This is said, "Turkish march". The form of this movement is assumed to be a France style rondo. The famous subject appears the in A minor. The episode of the in A major starts after this part is repeated. Next, Passage of the sixteenth note continues. It is ended that the episode of the in A minor reproduces it after that. Next, it returns to in A minor again, and the main subject is repeated. In addition, it transposes to the in A major key. It is a colorful and outlandishness movement.

[1] It is a music term that shows the speed. Adagio means "It is gradual". Andante means "Speed where it walks". Allegretto means "It is a little fast". Allegro means "It is fast".

[2] Syllable that gives decoration to fast phrase, and makes colorfully.

[3] Length of 1/16 of whole note.

[4] Generic name of note with length in which a certain note is divided into three.