Question: The Symphony No. 6 in B minor was first performed in Moscow on 4/16 December, conducted by  Russian pianist, teacher, conductor and composer also known as who?
Context: William Henry "Billy" Reed (29 July 18752 July 1942) was an English violinist, teacher, minor composer, conductor and biographer of Sir Edward Elgar.  He was leader of the London Symphony Orchestra for 23 years (1912–1935), but is best known for his long personal friendship with Elgar (1910–1934) and his book "Elgar As I Knew Him" (1936), in which he goes into great detail about the genesis of the Violin Concerto in B minor.  The book also provides a large number of Elgar's sketches for his unfinished Third Symphony, which proved invaluable sixty years later when Anthony Payne elaborated and essentially completed the work, although Reed wrote that in his view the symphony could not be completed. Alexis Soriano is a Spanish-Lithuanian orchestral conductor and composer.  A pupil of Ilya Musin, and later of Valery Gergiev, he has been Principal Associate Conductor of The Hermitage Orchestra for ten years and is Artistic Director of the "Spanish Evenings Festival" in Saint Petersburg.  On the invitation of Gergiev, he made his debut at the Mariinsky Theater, conducting Mozart's "The Marriage of Figaro".  Since 2009 he has been Artistic Director and principal conductor of the chamber opera company, "Opera Incognita" and conducted the company's first fully staged opera, "The letters of Van Gogh" by Grigory Frid, at the Hermitage Theatre.  The production was nominated for the Golden Mask Award.  His repertoire also includes contemporary and rarely performed music, especially Spanish.  He was chief conductor of INSO Lviv Symphony Orchestra between 2010 and 2012.  He has conducted the first recording of José Lidón's 1792 opera, "Glaura y Cariolano".  Since 2012 he has been Artistic Director of New York Opera Society.  In 2014 he was elected as one of the "100 Spaniards" which excelled abroad in their own discipline.  Among the orchestras he has conducted are those of the Mariinsky Theatre, Teatro Colón, and the Teatro Real in Madrid as well as the Lithuanian National Orchestra, Saint Petersburg Symphony, Prague Symphony, English Chamber Orchestra, and Taipei Symphony. The Overture in the French style, BWV 831, original title Ouvertüre nach Französischer Art, also known as the French Overture and published as the second half of Clavier-Übung II in 1735 (paired with the "Italian Concerto"), is a suite in B minor for two-manual harpsichord written by Johann Sebastian Bach.  An earlier version of this work exists, in the key of C minor (BWV 831a); the work was transposed into B minor to complete the cycle of tonalities in Parts One and Two of the Clavier-Übung.  The keys of the six Partitas (B♭ major, C minor, A minor, D major, G major, E minor) form a sequence of intervals going up and then down by increasing amounts: a second up (B♭ to C), a third down (C to A), a fourth up (A to D), a fifth down (D to G), and finally a sixth up (G to E).  The key sequence continues into "Clavier-Übung II" (1735) with two larger works: the Italian Concerto, a seventh down (E to F), and the French Overture, an augmented fourth up (F to B♮ ).  Thus this sequence of customary tonalities for 18th-century keyboard compositions is complete, extending from the first letter of his name (Bach's "home" key, B♭ , in German is B) to the last letter of his name (B♮ in German is H). Alexander Ilyich Siloti (also Ziloti, Russian: Алекса́ндр Ильи́ч Зило́ти , "Aleksandr Iljič Ziloti", Ukrainian: Олександр Ілліч Зілоті ; 9 October 1863 – 8 December 1945) was a Russian pianist, conductor and composer.  His daughter, Kyriena Siloti, was also a noted pianist and teacher in New York and Boston until her death in 1989, aged 94. The Symphony No. 3 in C minor is a symphony for orchestra by the American composer Florence Price.  The work was commissioned by the Works Progress Administration's Federal Music Project during the height of the Great Depression.  It was first performed at the Detroit Institute of Arts on November 6, 1940, by the Detroit Civic Orchestra under the conductor Valter Poole.  The composition is Price's third symphony, following her Symphony in E minor—the first symphony by a black woman to be performed by a major American orchestra—and her lost Symphony No. 2. Baron Hans Guido von Bülow (January 8, 1830February 12, 1894) was a German conductor, virtuoso pianist, and composer of the Romantic era.  One of the most famous conductors of the 19th century, his activity was critical for establishing the successes of several major composers of the time, especially Richard Wagner and Johannes Brahms.  Alongside Carl Tausig, Bülow was perhaps the most prominent of the early students of Hungarian virtuoso pianist, conductor and composer Franz Liszt – therein performed the first public performance of Liszt's Sonata in B minor in 1857.  He became acquainted with, fell in love and eventually married Liszt's daughter Cosima, who later left him for Wagner.  Noted for his interpretation of the works of Ludwig van Beethoven, he was one of the earliest European musicians to tour the United States. The Symphony No. 3 in B minor ""Ilya Muromets"", Op.  42, is a large symphonic work by Russian composer Reinhold Glière.  A program symphony, it depicts the life of Kievan Rus' folk hero Ilya Muromets.  It was written from 1908 to 1911 and dedicated to Alexander Glazunov.  The premier took place in Moscow on 23 March 1912 under Emil Cooper, and in 1914 the piece earned Glière his third Glinka Award (having already received it in 1905 and 1912). The Symphony No. 6 in B minor, Op. 74, Pathétique is Pyotr Ilyich Tchaikovsky's final completed symphony, written between February and the end of August 1893.  The composer entitled the work "The Passionate Symphony", employing a Russian word, Патетическая ("Pateticheskaya"), meaning "passionate" or "emotional", that was then mistranslated into French as "pathétique", "evoking pity", yet the mistranslation survived subsequent productions in every country but Russia.  The composer led the first performance in Saint Petersburg on 16/28 October of that year, nine days before his death.  The second performance, conducted by Eduard Nápravník, took place 21 days later, at a memorial concert on 6/18 November.  It included some minor corrections that Tchaikovsky had made after the premiere, and was thus the first performance of the work in the exact form in which it is known today.  The first performance in Moscow was on 4/16 December, conducted by Vasily Safonov.  It was the last of Tchaikovsky's compositions premiered in his lifetime; his last composition of all, the single-movement 3rd Piano Concerto, Op. 75, which was completed in October 1893, a short time before his death, received a posthumous premiere. Wilson Sawyer (1917–1979) was an American composer, arranger and musician.  Born in Traverse City, Michigan, he showed musical talent at an early age and studied music at the University of Michigan.  Sawyer conducted the University's Women's Glee Club and led the Bill Sawyer Orchestra, a big band that was featured on WMAQ's "Fitch Summer Bandwagon" on July 7, 1940.  He composed several arrangements of choral works; popular songs for Perry Como, Fred Waring and Ray Eberle; music for the "Alaskan Stampede," a Leo Seltzer produced "musical extravaganza on ice" c. 1944, and an opera based on Mark Twain's Tom Sawyer.  He is best known for composing Symphony No. 1, known as the Alaskan Symphony, at Gypsy Trail, Carmel, New York in 1945.  The work includes text from the "Spell of the Yukon" by Robert W. Service sung by a baritone soloist in the third movement, as well as other thematic inspirations drawn from his study of the climate, topography and history of the then-territory.  The Alaskan Symphony was first performed in December 1945 by the American Symphony Orchestra and was broadcast across the United States and to overseas armed services at that time.  Wilson Sawyer conducted the piece and Gov. Ernest Gruening of Alaska was guest speaker on the program.  At Gruening's request, the original score was placed in the Alaskan Museum of Natural History [Alaska Historical Library and Museum] in Juneau, Alaska.  In 1960, Sawyer's wife Maxine was diagnosed with spinal cancer and they moved to Pawling, New York where he operated a chicken farm and laundromat.  He continued to compose.  The Alaskan Symphony was performed by the Hudson Valley Philharmonic in 1975 with Sawyer again conducting even though he had recently suffered a stroke.  Sawyer revised the Symphony in 1977, making substantial cuts to the fourth movement among other edits.  The revised Alaskan Symphony was premiered by the Juneau Symphony on June 14, 2008, conducted by music director Kyle Wiley Pickett. Vasily Ilyich Safonov (Russian: Васи́лий Ильи́ч Сафо́нов, "Vasi'lij Ilji'č Safo'nov" ; 6 February 185227 February 1918), also known as Wassily Safonoff, was a Russian pianist, teacher, conductor and composer.
Answer: Wassily Safonoff