to regard him as a second father. These lessons continued until Rimsky-Korsakov's death in 1908. Stravinsky completed his first composition during this time, the Symphony in E-flat, catalogued as Opus 1. In the wake of Rimsky-Korsakov's death, Stravinsky composed Funeral Song, Op. 5, which was performed once and then considered lost until its re-discovery in 2015. In August 1905, Stravinsky became engaged to his first cousin, Katherina Gavrylovna Nosenko. In spite of the Orthodox Church's opposition to marriage between first cousins, the couple married on 23 January 1906. They lived in the family's residence at 6 Kryukov Canal in Saint Petersburg before they moved into a new home in Ustilug, which Stravinsky designed and built, and which he later called his "heavenly place". He wrote many of his first compositions there. It is now a museum with documents, letters, and photographs on display, and an annual Stravinsky Festival takes place in the nearby town of Lutsk. Stravinsky and Nosenko's first two children, Fyodor (Theodore) and Ludmila, were born in 1907 and 1908, respectively. Ballets for Diaghilev and international fame, 1909–1920 By 1909, Stravinsky had composed two more pieces, Scherzo fantastique, Op. 3, and Feu d'artifice ("Fireworks"), Op. 4. In February of that year, both were performed in Saint Petersburg at a concert that marked a turning point in Stravinsky's career. In the audience was Sergei Diaghilev, a Russian impresario and owner of the Ballets Russes who was struck with Stravinsky's compositions. He commissioned Stravinsky to orchestrate Chopin's Nocturne in A-flat major and Grande valse brillante in E-flat major for the new ballet Les Sylphides as part of the 1909 ballet season, which were finished by April of that year. While planning for the 1910 ballet season, Diaghilev wished to stage a mix of Russian opera and ballet for the 1910 season in Paris, among them a new ballet from fresh talent that was based on the Russian fairytale of the Firebird. After Anatoly Lyadov was given the task of composing the score, he informed Diaghilev that he needed about one year to complete it. Diaghilev then asked the 28-year-old Stravinsky, who had provided satisfactory orchestrations for him for the previous season at short notice and agreed to compose a full score. At about 50 minutes in length, The Firebird was revised by Stravinsky into concert suites in 1919 and 1945. The Firebird premiered at the Opera de Paris on 25