Question: What society of musicians was founded by Mitrofan Belayev and included Russian composer Natoly Lyadov?

Context paragraphs:
Symphony No. 2 (Rachmaninoff): Symphony No. 2 in E minor, Op. 27 is a symphony by the Russian composer Sergei Rachmaninoff, written in 1906–07.  The premiere was conducted by the composer himself in Saint Petersburg on 8 February 1908.  Its duration is approximately 60 minutes when performed uncut; cut performances can be as short as 35 minutes.  The score is dedicated to Sergei Taneyev, a Russian composer, teacher, theorist, author, and pupil of Pyotr Ilyich Tchaikovsky.  Alongside his Piano Concerto No. 2 and Piano Concerto No. 3, this symphony remains one of the composer's best known compositions.

30th Young Artist Awards: The 30th Young Artist Awards ceremony, presented by the Young Artist Association, honored excellence of young performers under the age of 21 in the fields of film, television and theater for the 2008 season, and took place on March 29, 2009 at Universal Studios' Globe Theatre in Universal City, California.  Special guest performers for the ceremony that year included Russian musical artists, "Street Magic" and Las Vegas father and son acrobat team, "The Kalinins."

Belyayev circle: The Belyayev circle (Russian: Беляевский кружок ) was a society of Russian musicians who met in Saint Petersburg, Russia between 1885 and 1908, and whose members included Nikolai Rimsky-Korsakov, Alexander Glazunov, Vladimir Stasov, Anatoly Lyadov, Alexander Ossovsky, Witold Maliszewski, Nikolai Tcherepnin, Nikolay Sokolov, Alexander Winkler among others.  The circle was named after Mitrofan Belyayev, a timber merchant and amateur musician who became a music philanthropist and publisher after hearing the music of the teenage Glazunov.

Nikolay Sokolov (composer): Nikolay Alexandrovich Sokolov (Russian: Никола́й Алекса́ндрович Соколо́в ; 26 March [O.S. 14 March] 1859 27 March 1922) was a Russian composer of classical music and a member of the circle that grew around the publisher Mitrofan Belyayev.

Alexander Radvilovich: Alexander Yuryevich Radvilovich (Russian: Александр Юрьевич Радвилович ; born 1955) is a Russian composer, pianist and teacher from Leningrad (now Saint Petersburg) from which Conservatory he also graduated at which he was under guidance from Sergei Slonimsky.  In 1992 and 1994 respectively he was the first ever composer of Russian origin to get education at the International New Music in Darmstadt.  He is known for his symphonies of two of his own poems called "Legend About Violinist" and "Pushkin".  At one time, after reading Fyodor Dostoyevsky he composed a string quartet called "The Boy at Christ’s New Year Celebration" and also designed a mini opera called "Let’s Write Fairy-tale".  He also composed an opera called "Hindrance" which was based on Danii Kharms' poem "Ruin of the Gods".  Currently he is a member of both Russian Composer’s and Saint Petersburg Composer's Unions and works as music pedagogue at the Humanitarian University of the Petersburg Conservatory.  On occasion, he tours the world as composer, pianist and leader of the Sound Ways which he also founded back in 1989.  His music is published by various labels in countries such as Russia, the Netherlands and the United States.

Rusalka (Dargomyzhsky): Rusalka (Russian: Руса́лка ) is an opera in four acts, six tableaux, by Alexander Dargomyzhsky, composed during 1848-1855.  The Russian libretto was adapted by the composer from Pushkin's incomplete dramatic poem of the same name.  It premiered on 4 May 1856 (Old Style) at the Theatre-circus, conducted by Konstantin Lyadov (father of Anatoly Lyadov), choreographed by Marius Petipa and Nikolay Goltz, but was badly received predominantly by the aristocracy.

Anatoly Lyadov: Anatoly Konstantinovich Lyadov or Liadov (Russian: Анато́лий Константи́нович Ля́дов ; May 12 [O.S. April 30] 1855 August 28 [O.S. August 15] 1914 ) was a Russian composer, teacher and conductor.

Russo-Turkish War (1877–1878): The Russo-Turkish War of 1877–78 (Turkish: "93 Harbi ('93 War)" ) was a conflict between the Ottoman Empire and the Eastern Orthodox coalition led by the Russian Empire and composed of Bulgaria, Romania, Serbia, and Montenegro.  Fought in the Balkans and in the Caucasus, it originated in emerging 19th-century Balkan nationalism.  Additional factors included Russian hopes of recovering territorial losses suffered during the Crimean War, re-establishing itself in the Black Sea and supporting the political movement attempting to free Balkan nations from the Ottoman Empire.

Symphony No. 3 (Glazunov): Alexander Glazunov composed his Symphony No. 3 in D major, Op.  33, in 1890, and it was published by 1892 by the Leipzig firm owned by Mitrofan Belyayev.  The symphony is dedicated to Pyotr Ilyich Tchaikovsky and was first performed in St. Petersburg in December 1890 under the baton of Anatoly Lyadov.  The symphony is considered a transitional work, with Glazunov largely eschewing the influences of Balakirev, Borodin, and Rimsky-Korsakov inherent in his earlier symphonies for the newer influences of Tchaikovsky and Wagner.  Because of this change, the Third has been called the "anti-kuchkist" symphony in Glazunov's output ("kuchkist" from "kuchka", the shortened Russian name for the nationalist music group The Five).  He would tone down these new influences in his subsequent symphonies as he strove for an eclectic mature style.  The Third also shows a greater depth of expression, most evident in the chromatic turns of its third movement, reminiscent of Wagner's opera "Tristan und Isolde".

Mitrofan Belyayev: Mitrofan Petrovich Belyayev (Russian: Митрофа́н Петро́вич Беля́ев ; old style 10/22 February 1836, St. Petersburg22 December 1903/ 4 January 1904) was an Imperial Russian music publisher, outstanding philanthropist, and the owner of a large wood dealership enterprise in Russia.  He was also the founder of the Belyayev circle, a society of musicians in Russia whose members included Nikolai Rimsky-Korsakov, Alexander Glazunov and Anatoly Lyadov.  His surname is often transliterated as "Belaieff" or "Belayev".  In 1886 the important Russian painter Ilya Repin made a portrait of Belyayev.

Supporting paragraphs: Mitrofan Belyayev Anatoly Lyadov
Answer: the Belyayev circle