Sergei Sergeyevich Prokofiev (23 April 1891 – 5 March 1953) was a Russian composer, pianist and conductor who mastered numerous musical genres and is regarded as one of the major composers of the 20th century. His best-known works include 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. Besides many other works, Prokofiev also composed five piano concertos, nine completed piano sonatas and seven symphonies.
1.) Harlow Robinson (2002). Sergei Prokofiev: a biography. Northeastern University Press. p. 425. ISBN 978-1-55553-517-9. "Prokofiev had always been a stubborn atheist; his first marriage to Lina was not performed in a church."
2.) His biographer, Simon Morrison, details Prokoviev's long history with Christian Science. Here is a select quote: "The surprise lies in the choice of his faith: Prokofiev was neither an adherent of Orthodoxy nor Catholicism nor even Protestantism, but of Christian Science."