Title: Petrushka chord
Content:  The Petrushka chord is a recurring polytonal device used in Igor Stravinsky's ballet Petrushka and in later music. These two major triads, C major and F major – a tritone apart – clash, "horribly with each other", when sounded together and create a dissonant chord.
Title: Petrushka chord
Content:  years before Stravinsky composed Petrushka (1911), suggesting that Stravinsky may have learned the trick from Ravel. Stravinsky heard Jeux d'eau and several other works by Ravel no later than 1907 at the "Evenings for Contemporary Music" program. Stravinsky used the chord repeatedly throughout the ballet Petrushka to represent the puppet and devised the chord to represent the puppet's mocking of the crowd at the Shrovetide Fair. Eric Walter White suggests and dismisses the possibility that the Petrushka chord is derived from Messiaen's "second Modes of limited transposition" (the octatonic scale) in favor of a "black key/white key bitonality" which results from, "Stravinsky's well known habit of composing at the piano."
Title: Petrushka (ballet)
Content:  Although Petrushka's room is inside the puppet theater, the Benois design is fantastical, portraying the night sky with stars and a half-moon; abstract icebergs (or snow-capped mountains), and a prominent portrait of the Magician. Drumrolls announce the beginning of the second tableau. Without an Introduction, the music begins menacingly. "A foot kicks him onstage; Petrushka falls..." As Petrushka gradually pulls himself together, we hear a strange arpeggio in the clarinets: this is the famous "Petrushka chord" (consisting of juxtaposed triads of C major and F major). Petrushka gets to his feet (although shakily) to the accompaniment of waves of arpeggios from the piano (revealing the music's origins in Stravinsky's Konzertstück). The "Petrushka Chord" returns, now violently scored for trumpets, marked in the score "Petrushka's Curses", directed at the portrait of the Magician. The music turns lyrical as Petrushka falls to his knees and mimes (in turn) his self-pity, love 
Title: Petrushka (ballet)
Content:  music as a pure concert work—a Konzertstück, Diaghilev immediately realized its theatrical potential. The notion of a puppet put Diaghilev in mind of Petrushka, the Russian version of Punch and Judy puppetry that had formed a traditional part of the pre-Lenten Carnival festivities in 1830s St. Petersburg. Stravinsky composed the music during the winter of 1910–11 for Diaghilev's Ballets Russes. It was premièred in Paris at the Théâtre du Châtelet on 13 June 1911 under conductor Pierre Monteux, with choreography by Michel Fokine and sets by Alexandre Benois. The title role was danced by Vaslav Nijinsky. The work is characterized by the so-called Petrushka chord (consisting of C major and F major triads played together), a bitonality device heralding the appearance of the main character.
Title: Octatonic scale
Content:  The Petrushka chord is a recurring polytonal device used in Igor Stravinsky's ballet Petrushka and in later music. In the Petrushka chord, two major triads, C major and F major – a tritone apart – clash, "horribly with each other", when sounded together and create a dissonant chord. The six-note chord is contained within an octatonic scale.
Title: Petrushka chord
Content:  The Petrushka chord in the piano during the second tableau of Petrushka is shown below. The Petrushka chord is defined as two simultaneous major triads separated by a tritone. In Petrushka, Stravinsky used C major on top of F major (the latter presented here in first inversion): The device uses tones that, together, make up a synthetic hexatonic scale (0 1 4 6 7 t). When enharmonically spelled C–D–E–G–G–B, it is called the tritone scale. Alternatively, when spelled C–D–E–F–G–B, it can be read as the auxiliary diminished scale. The chords may be considered to contradict each other because of the tritone relationship: "Any tendency for a tonality to emerge may be avoided by introducing a note three whole tones distant from the key note of that tonality." At the end of the third tableau, the Petrushka chord appears with Petrushka but at A and E, which, with C and F, create a diminished seventh chord (0, 3, 6, 9) and exhaust the octatonic scale (9 1 4, 3 7 t, 0 4 7, and 6 t 1 = 0 1 3 4 6 7 9 t), "and suggests that it did... possess for Stravinsky an a priori conceptual status".
Title: Petrushka chord
Content:  Jazz musicians utilize this chord as an upper structure to "colorize" a dominant chord. (see also Tritone substitution) The 1979 song "Kogaion" by Romanian progressive rock band Sfinx makes use of the chord. The Petrushka chord is dominantly used in the track Above the Clouds (Listen), from the 2003 simulation game Sim City 4.
Title: Petrushka (ballet)
Content:  Petrushka (Pétrouchka; Петрушка) is a ballet and orchestral concert work by Russian composer Igor Stravinsky. It was written for the 1911 Paris season of Sergei Diaghilev's Ballets Russes company; the original choreography was by Michel Fokine and stage designs and costumes by Alexandre Benois, who assisted Stravinsky with the libretto. The ballet premiered at the Théâtre du Châtelet on 13 June 1911 with Vaslav Nijinsky as Petrushka, Tamara Karsavina as the lead ballerina, Alexander Orlov as the Moor, and Enrico Cecchetti the charlatan. Petrushka tells the story of the loves and jealousies of three puppets. The three are brought to life by the Charlatan during the 1830 Shrovetide Fair (Maslenitsa) in Saint Petersburg, Russia. Petrushka loves the Ballerina, but she rejects him. She prefers 
Title: Petrushka (ballet)
Content:   While the original idea was Stravinsky's, Alexandre Benois provided the ethnographic details of the Shrovetide Fair and the traditions of the Russian puppet theater. And although Petrushka is frequently cited as an example of the complete integration of libretto, music, choreography, and scenic design, Stravinsky had composed significant portions of the music (chiefly the second tableau) before Benois became involved with the project.
Title: Petrushka (ballet)
Content: Woodwinds: ; 3 flutes (3rd doubling piccolo) ; 2 oboes ; 1 cor anglais ; 3 clarinets in B (3rd doubling bass clarinet in B) ; 2 bassoons ; 1 contrabassoon Brass section: ; 4 horns in F ; 3 trumpets in B and C ; 3 trombones ; 1 tuba Percussion: ; Timpani ; Bass drum ; Cymbals ; Snare drum ; Tambourine ; Triangle ; Tamtam ; Xylophone ; Piano ; Celesta ; Harp Strings Stravinsky's 1946 scoring is for a smaller orchestra:     Compared to the 1911 version, the 1946 version (given in 1947) requires 1 less flute; 2 fewer oboes, but a dedicated cor anglais player instead of one doubled by the fourth oboe; 1 less clarinet; 2 fewer bassoons, but a dedicated contrabassoon; neither of the 2 cornets, but an additional trumpet; 1 less snare drum and no tenor drum, thus removing the offstage instruments; no glockenspiel; and 1 less harp.

Question: Who was the composer of Petrushka chord?
Answer: Igor Stravinsky.
Igor Fyodorovich Stravinsky.
Stravinsky.
Igor Strawinski.
Igor Strawinsky.
Igor Stravinskii.
Igor Feodorovich Stravinsky.
Jgor Strawinsky.
Igor Strawinskij.
Igor Stravinski.
Igor Fedorovich Stravinsky.
I. Strawinsky.