Sergei Sergeyevich Prokofiev ( ; Russian: Сергей Сергеевич Прокофьев , "Sergej Sergejevič Prokofjev" ; 27 April 1891 – 5 March 1953) was a Soviet composer, pianist and conductor.
 As the creator of acknowledged masterpieces across numerous musical genres, he is regarded as one of the major composers of the 20th century.
 His works include such widely heard works as the March from "The Love for Three Oranges," the suite "Lieutenant Kijé", the ballet "Romeo and Juliet" – from which "Dance of the Knights" is taken – and "Peter and the Wolf."
 Of the established forms and genres in which he worked, he created – excluding juvenilia – seven completed operas, seven symphonies, eight ballets, five piano concertos, two violin concertos, a cello concerto, a Symphony-Concerto for cello and orchestra, and nine completed piano sonatas.
Boris Krajný is a Czech pianist, b. 1945, best known for his work on Czech and French pianism - he was awarded the Académie Charles Cros's 1982 Grand Prix du Disque for his recording of Albert Roussel, Arthur Honegger and Francis Poulenc piano concertos.
 He has also recorded Sergei Prokofiev and Béla Bartók's 3rd piano concertos together with Jiří Bělohlávek's Czech Philharmonic Orchestra and Maurice Ravel's complete piano works for Supraphon.
 Krajný obtained an honourable mention at the 1975 Queen Elisabeth Music Competition.
 He teaches at the Academy of Performing Arts in Prague.
Sergei Olegovich Prokofieff (16 January 1954 – 26 July 2014) was a Russian anthroposophist.
 He was the grandson of the composer Sergei Prokofiev and his first wife Lina Prokofiev, and the son of Oleg Prokofiev and his first wife Sofia Korovina.
 Born in Moscow, he studied fine arts and painting at the Moscow School of Art.
 He encountered anthroposophy in his youth, and soon made the decision to devote his life to it.
Joseph Maurice Ravel (] ; 7 March 1875 – 28 December 1937) was a French composer, pianist and conductor.
 He is often associated with impressionism along with his elder contemporary Claude Debussy, although both composers rejected the term.
 In the 1920s and 1930s Ravel was internationally regarded as France's greatest living composer.
Triton was a Paris-based chamber music society founded by Pierre-Octave Ferroud to promote new music.
 Its executive committee (comité actif) was made up of composers, including Francis Poulenc, Darius Milhaud, Arthur Honegger, Bohuslav Martinů and Sergey Prokofiev.
 On its honorary committee were Maurice Ravel, Albert Roussel, Arnold Schoenberg, Richard Strauss, Igor Stravinsky, Béla Bartók and Karol Szymanowski.
 Concerts were held at the École normale de musique, the first being held on 16 December 1932.
 The inaugural concert included the premiere of Honegger's Sonatina for violin and cello, and the European premiere of Prokofiev's Sonata for Two Violins.
The Toccata in D minor, Op. 11 is a piece for solo piano, written by Sergei Prokofiev in 1912 and debuted by the composer on December 10, 1916 in Petrograd.
 It is a further development of the toccata form, which has been used by composers such as Johann Sebastian Bach and Robert Schumann.
 Other composers of well-known toccatas include Maurice Ravel, Dmitri Kabalevsky and Aram Khachaturian.
Semyon Kotko (Russian: Семён Котко ), Op. 81, is an opera in five acts by Sergei Prokofiev to a libretto by Sergei Prokofiev and Valentin Katayev based on Katayev's 1937 novel "I, Son of Working People" (Russian: Я, сын трудового народа… ).
 It was premiered on 23 June 1940 at the Stanislavsky Opera Theatre in Moscow.
In 2007, the Chicago Symphony Orchestra launched its in-house record label, CSO Resound.
 Since its founding, CSO Resound has produced works by Gustav Mahler, Anton Bruckner, Francis Poulenc, Dmitri Shostakovich, Giuseppe Verdi, Richard Strauss, Igor Stravinsky, Sergei Prokofiev, and Maurice Ravel, as well as arrangements of works for brass instruments as performed by members of the renowned brass section of the orchestra.
 Conductors include Chicago Symphony Orchestra music director Riccardo Muti, principal conductor Bernard Haitink, conductor emeritus Pierre Boulez, and New York Philharmonic music director Alan Gilbert.
Visions fugitives, Op. 22, are a series of short piano pieces composed by Russian composer Sergei Prokofiev (1891–1953) between 1915 and 1917.
 They were premiered by Prokofiev on April 15, 1918 in Petrograd, Soviet Union.
 They were written individually, many for specific friends of Prokofiev's, and he originally referred to them as his "doggies" because of their "bite".
 In August 1917, Prokofiev played them for Russian poet Konstantin Balmont, and others, at the home of a mutual friend.
 Balmont was inspired to compose a sonnet on the spot, called "a magnificent improvisation" by Prokofiev who named the pieces ""Mimolyotnosti"" from these lines in Balmont's poem: ""In every fleeting vision I see worlds, Filled with the fickle play of rainbows"".
 A French-speaking friend at the house, Kira Nikolayevna, immediately provided a French translation for the pieces: "Visions Fugitives".
 Prokofiev often performed only a couple of them at a time as encores at the end of his performances.
Werner Haas (March 3, 1931October 11, 1976) was a German classical pianist.
 He was known for his performances of early 20th century compositions, particularly those of Claude Debussy and Maurice Ravel.
 He had a wide repertoire that also included works by Johann Sebastian Bach, Wolfgang Amadeus Mozart, Franz Schubert, Robert Schumann, Frédéric Chopin, Ludwig van Beethoven, Sergei Prokofiev, Dmitry Kabalevsky, and the complete works for piano and orchestra by Pyotr Ilyich Tchaikovsky.

Question: who was born first, Sergei Prokofiev or Maurice Ravel ?
Answer: Maurice Ravel