Concerto for Two Pianos (Stravinsky)
The Concerto for Two Pianos (sometimes also referred to as Concerto for Two Solo Pianos or rather as its Italian original name, Concerto per due pianoforti soli) is a composition by Russian composer Igor Stravinsky. It was finished on November 9, 1935 and, together with his Sonata for Two Pianos, is considered nowadays as one of his major compositions for piano during his neoclassical period. It was also Stravinsky's first work after becoming a French citizen.
Stravinsky decided that, after composing his Concerto for Piano and Wind Instruments, he wanted to explore the capabilities of the piano as a solo instrument. In fact, Stravinsky had in mind a piece for which no orchestra would be needed (in case he lived in a city where no resident orchestra was actually established) and which could be played by himself and his son, Soulima Stravinsky. Given that, he began to work on a piece which would be the first movement of the Concerto in 1931 in Voreppe after finishing his Violin Concerto, although he found himself unable to complete a composition for which two pianos would play simultaneously and fully complement each other.
He then took a break and took up the concerto again after finishing his Duo Concertante and Persephone, even though he was interrupted again due to an appendectomy. Having figured out that he had given a three-year break to his composition, and this could result in a radical difference between its first movement and the rest of the work, he opted for asking Pleyel et Cie to build him a double piano, one appended to the back part of the other. Pleyel could eventually invent it, so Stravinsky finished the Concerto in 1935. In 1963, Stravinsky stated in a conversation with American conductor Robert Craft for his book "Dialogues and a Diary" (1963) that "the Concerto is perhaps my 'Favorite' among my purely instrumental pieces." Stravinsky claimed to have been inspired by variations by Brahms and Beethoven and, especially, by Beethoven's fugues. 
Movement Order 
The order of the movements was a challenging issue for Stravinsky, due to his break at the time of composing this work. Stravinsky stated in a conversation with Robert Craft that the third movement was meant to be placed after the first movement. Nevertheless, Stravinsky expert Eric Walter White claims that Stravinsky had put the variations after the fugue but eventually decided to change it because the last chord of the fugue was stronger.
Key System 
There are discernable patterns in the work that indicated that every movement is in a different tonality.
The first movement is in E minor, even though it modulates to B-flat major in its middle section, its most remote key possible. However, the background voices are often dissonant with the two melodic subjects, which generate bitonality. The second movement is in G major and, as in the first movement, it also modulates to its most remote key in its central section. The first variation is in G minor and modulates to B-flat major, the second is in the same key as the previous one and modulates to C-sharp minor, the third is still in the same key as the previous one and changes to A-sharp minor (which is an enharmonic key with B-flat minor) and the last variation rotates round G minor or E-flat major while the harmonisation of the first piano implies C major. Ultimately, the last variation modulates to D major. Both the Prelude and the Fugue are in D, but, towards the end, a descending chromatic scale performed non simultaneously by both of the pianos makes it to change to E major.
The composition was premièred in Paris, at a recital given in the Salle Gaveau by the Université des Annales on November 21, 1935. He gave two concerts the same day (one in the morning and another one in the evening), giving a 15-minute speech before each one. The concert was subsequently played during the following months with his son Soulima Stravinsky throughout Europe and South America.
After playing it in Baden-Baden, Stravinsky signed a contract with the French subdivision of Columbia Records to make a commercial release of the concerto, which was eventually released after his death because of the war. 
This Concerto is divided into four movements, even though the third movement is also split up into four different parts. A typical performance of this work should last approximately 20 minutes. The movement titles were originally written in Italian:
- I. Con moto
- II. Notturno: Adagietto (Nocturne)
- III. Quattro variazioni (Four Variations)
- Variazione I (Variation I)
- Variazione II (Variation II)
- Variazione III (Variation III)
- Variazione IV (Variation IV)
- IV. Preludio e fuga (Prelude and Fugue)
First movement 
The first movement is in a form that recalls a first movement of a sonata, with its tonal regions and its recapitulation; this movement is full of repeated notes and chords, in which its energy and momentum is based. In the central section of this movement, groups of sixteenth notes are grouped in sextuplets repeated in 4/4.
Second movement 
The second movement, Notturno, was described by Stravinsky as "not so much night music as after-dinner music, in fact, a digestive to the largest movements", as he also stated that the first piano part was like "a ballerina represented by a harpsichord".
Third movement 
Fourth part of the third movement
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The third movement is a collection of variations of a theme that is not present in that movement, but in the fugue of the following movement. These four variations are characterised by having different speeds, melodic lines in different octaves throughout the whole movement; in the last variation, a typical Stravinsky technique (an ostinato in G and B-flat, that is, a third interval) is present. In various statements, Stravinsky claims he could have orchestrated this specific movement, but he wanted this composition to remain a composition for two pianos, so that he and his son could play it. 
Fourth movement 
The fourth and final movement is a slow prelude and a four-voiced fugue, followed by an after-fugue in which the notes of the theme are represented in inversion. Accompanying the four voices, there is one more voice which repeats notes in sixtuplets, which is a direct reference to the first movement. It ends with a strongly dissonant fortissimo chord by the two pianos, which is followed by a softer and more consonant chord which closes the concerto, though in 1957 Stravinsky expressed to American pianist Paul Jacobs that he wanted to leave out the softer chord. Stravinsky considered this movement was the one in the whole concerto he was most fond of. 
The Concerto is included in some of the most complete catalogues of works by Igor Stravinsky. In Eric W. White's catalogue, the Concerto is listed with the reference number W66, Harry Halbreich lists it with the number HH58, and Clifford Cæsar lists it with the number CC80
Notable recordings 
Notable recordings of this concerto include:
|Pianists||Record Company||Year of Recording||Format|
|Igor Stravinsky and Soulima Stravinsky||Columbia/EMI/Soundmark||1938||LP and CD|
|Paul Jacobs and Ursula Oppens||Arbiter/Nonesuch Records||1977||CD|
|Alfons Kontarsky and Aloys Kontarsky||Deutsche Grammophon||1992||CD|
|Benjamin Frith and Peter Hill||Naxos Records||1995||CD|
- Jacobs, Paul (2008). Stravinsky: Music for Four Hands. New York: Nonesuch Records and Arbiter Records. p. 12. Retrieved January 28, 2012.
- White, Eric Walter (1985). Stravinsky: The Composer and His Works, Second edition. University of California Press. pp. 389–392. ISBN 0520039858. Retrieved August 6, 2012.
- Lindemann Malone, Andrew (2012). "Concerto for 2 solo pianos". Rovi Corporation, Ltd. Retrieved January 26, 2012.
- Craft, Robert; Stravinsky, Igor (1982). Dialogues. University of California Press. pp. 42–43. ISBN 0520046501. Retrieved August 6, 2012.
- "Composers In Person - Stravinsky: Les Noces, Octet, Etc". Hong Kong: Rovi Data Solutions, Inc. 1993. Retrieved September 25, 2012.
- "Arbiter 155: Stravinsky: Music for Four Hands". New York: Allan Evans. 2008. Retrieved September 25, 2012.
- "Sonate für 2 Klaviere und Schlagzeug · Sonata for 2 Pianos and Percussion + Stravinsky: Konzert für 2 Klaviere Sonate für 2 Klaviere 20th-Century Classics". Berlín: Deutsche Grammophon. 1992. Retrieved September 25, 2012.
- "STRAVINSKY: Music for Two Pianos". Hong Kong: Naxos Digital Services Ltd. 1995. Retrieved September 25, 2012.