Question: What Russian composer and pianist was friends with Canadian composer, pianist, writer on music, and music educator Alfred La Liberté?

Context articles: Freedom to Dream and Freedom to Speak
Alcides Lanza
Roger Matton
Amédée Papineau
Alexis Contant
Alfred La Liberté
Rodolphe Mathieu
Dominique Ducharme (musician)
Jack Behrens
Alexander Scriabin

"La liberté pour Rêver" and "La liberté pour parler" are essays written in French by French Nobel laureate J. M. G. Le Clézio and translated into English as "Freedom to Dream" and "Freedom to Speak" and published by World Literature Today .
Alcides Emigdio Lanza (born 2 June 1929) is a Canadian composer, conductor, pianist, and music educator of Argentinian birth.
 He became a naturalized Canadian citizen in 1976.
 As both a composer and performer he is known as an exponent of contemporary classical music and avant-garde music.
 His works often utilize a combination of traditional and unusual instruments, and incorporate electronic sounds and extensions.
 He is also known for using special lighting effects when presenting his music.
 Many of his compositions are published by Boosey & Hawkes, and Lanza himself owns his own publishing company, Shelan Editions.
 He is an associate of the Canadian Music Centre, a member of the Canadian League of Composers.
, and an Honorary Member of the Canadian Electroacoustic Community.
Roger Matton OC (18 May 1929 – 7 June 2004) was a Canadian composer, ethnomusicologist, and music educator.
 As a composer his works are characterized by their association with folklore and folkmusic.
 In 1965 he was awarded the Prix de la création at the Congrès du spectacle.
 In 1966 the Montreal Symphony Orchestra included his "Mouvement symphonique II" in their concert repertoire for their 1966 tour of the Soviet Union, making it one of the first symphonic works by a Canadian composer to be performed in that nation.
 He was awarded the Calixa-Lavallée Award in 1969 and in 1984 he was named an Officer of the Order of Canada.
Louis-Joseph-Amédée Papineau, or Amédée Papineau (1819-1903) was a writer and Québecois patriot.
 and present at the meeting at which the Société des Fils de la Liberté was founded.
 He was the eldest son of Louis-Joseph Papineau, a leader in the Rebellion of 1837 in Lower Canada, and was involved in the rebellion himself.
 His father was forced to flee, and Amédée followed him to Saratoga Springs, New York.
 Between 1837 and 1842, he drew up the first four books of his personal journal as "Journal d'un Fils de la Liberté" in which he chronicled the events of the 1837 rebellion and his life in exile.
Joseph Pierre Alexis Contant (12 November 1858 – 28 November 1918) was a Canadian composer, organist, pianist, and music educator.
 The first notable Canadian composer to be entirely trained in his native country, he stated "I write not for glory but rather to satisfy an irresistible need."
 Although he had considerable training as a pianist, his knowledge of musical composition was largely self-taught, although not by choice as his life afforded him little opportunity to find suitable teachers.
 Much of his time was spent dedicated towards teaching, family, and work as a church organist, and his compositional output was minimal before 1900.
 As his children grew older, he was able to devote more time to composition and therefore his later life was his most productive.
 A stroke in 1914 virtually ended his activity as a composer.
Alfred La Liberté (10 February 1882 – 7 May 1952) was a Canadian composer, pianist, writer on music, and music educator.
 He was a disciple and close personal friend of Alexander Scriabin.
 He was also an admirer of Marcel Dupré and Nikolai Medtner.
 Dupré notably dedicated his "Variations, Opus 22" for piano to him and Medtner dedicated his "Sonata minacciosa, Opus 53 no. 2" and his song "The Captive, Opus 52 no. 7" to La Liberté.
 Most of his own compositions remain unfinished.
 He also contributed articles to "Le Passe-Temps", including one on Scriabin in May 1946.
Joseph Rodolphe Mathieu (10 July 1890 – 29 June 1962) was a Canadian composer, pianist, writer on music, and music educator. "
The Canadian Encyclopedia" states, "Considered too avant-garde for his time because of Debussy's influence on his music, Mathieu gained recognition too late to inspire the generation that followed."
 The pianist Léo-Pol Morin was one of the few important exponents of his work, notably including Mathieu's "Chevauchée" and "Trois Préludes" in his concert repertoire.
 Mathieu's song "Un peu d'ombre" (1913) was included in a number of recitals given by Marguerite Bériza and Sarah Fischer in Europe.
Dominique Ducharme (14 May 1840 - 28 December 1899) was a Canadian pianist, organist, and music educator.
 He studied with Paul Letondal and Charles Wugk Sabatier in Canada before studying for 5 years at the Conservatoire de Paris in France with Antoine Marmontel and François Bazin.
 In Europe he became acquainted with several notable musicians who influenced his piano and organ technique, including Franz Liszt and Camille Saint-Saëns.
 He later befriended Ignacy Jan Paderewski in 1889; a relationship which added to his piano teaching the methodology of the Viennese school.
 He was the organist at the Église du Gesù in Montreal from 1869-1898.
 In 1896-1897 he was the President of the Académie de musique du Québec.
 A celebrated piano teacher, his students included Édouard Clarke, Achille Fortier, Alfred La Liberté, William Reed, Émiliano Renaud, and Joseph Saucier.
Jack Behrens (born 25 March 1935) is a Canadian composer, music educator, and writer of American birth.
 A member of the Canadian League of Composers and an associate of the Canadian Music Centre, his music has been performed throughout North America and on CBC Radio and radio stations in the United States.
 In 1970 his orchestral work "The Sound of Milo" won first prize in the New Orleans Symphony contest and his choral work "How Beautiful is the Night" was awarded the Francis Boott Prize at Harvard University.
 He was married to the late Canadian pianist Sonja Peterson Behrens.
Alexander Nikolayevich Scriabin ( ; Russian: Алекса́ндр Никола́евич Скря́бин , ] ; 6 January 1872 [O.S. 25 December 1871] – 27 April [O.S. 14 April] 1915 ) was a Russian composer and pianist.
 Scriabin, who was influenced early in his life by the works of Frédéric Chopin, composed works that are characterised by a highly tonal idiom (these works are associated with his "first stage" of compositional output).
 Later in his career, independently of Arnold Schoenberg, Scriabin developed a substantially atonal and much more dissonant musical system, which accorded with his personal brand of mysticism.
 Scriabin was influenced by synesthesia, and associated colours with the various harmonic tones of his atonal scale, while his colour-coded circle of fifths was also influenced by theosophy.
 He is considered by some to be the main Russian Symbolist composer.