Question: Which significant Ukrainian Soviet modernist composer was taught by Arkady Abaza?
Context: Nikolai Andreevich Roslavets (Russian: Никола́й Андре́евич Ро́славец ) (4 January 1881 [O.S. 23 December 1880] , Surazh, then in Chernigov Governorate, Russian Empire, now in Bryansk Oblast, Russia23 August 1944, Moscow) was a significant Ukrainian Soviet modernist composer.  Roslavets was a convinced modernist and cosmopolitan thinker; his music was officially suppressed from 1930 onwards. Petro Osypenko (Ukrainian - Петро Григорович Осипенко; born 14 May 1921, Dykivka, now in Znamianka, Kirovohrad, Ukraine; date of death unknown) was a Ukrainian Soviet politician and public prosecutor.  From 1983 to 1990 he was the prosecutor general of the Ukrainian Soviet Socialist Republic (a role which at that time was subordinate to the Prosecutor General of the Soviet Union). The modern Ukrainian presidency was formed when the Verkhovna Rada of the Ukrainian Soviet Socialist Republic passed a law on 5 July 1991 establishing the office of the "President of the Ukrainian Soviet Socialist Republic."  Upon the proclamation of Ukrainian independence from the Soviet Union on 24 August 1991, the title was changed to the "President of Ukraine."  The first election of the President of Ukraine was contested on 1 December 1991, which was won by Leonid Kravchuk. The coat of arms of the Ukrainian Soviet Socialist Republic was adopted on March 14, 1919 by the government of the Ukrainian Soviet Socialist Republic and subsequently modified on November 7, 1928, January 30, 1937 and November 21, 1949.  The coat of arms from 1949 is based on the coat of arms of the Soviet Union and features the hammer and sickle, the red star, a sunrise and stalks of wheat on its outer rims.  The rising sun stands for the future of the Soviet Ukrainian nation, the star as well as the hammer and sickle for the victory of communism and the "world-wide socialist community of states". Fedir Kyrylowytsch Hlukh (Ukrainian - Фе́дір Кири́лович Глух; 18 September 1912, Beyeve, now Lypovodolynskyi district, Sumy region – 4 August 1984, Kiev) was a Ukrainian Soviet lawyer and statesman.  From 1963 to 1983 he was the prosecutor general of the Ukrainian Soviet Socialist Republic (a role which at that time was subordinate to the Prosecutor General of the Soviet Union). Denys Charitonowitsch Panasyuk (Ukrainian - Денис Харитонович Панасюк; 5 (17) May 1900, Hanschyna – 8 June 1984, Kiev) was a Ukrainian Soviet lawyer and politician.  He was a deputy of the 35th convocation of the Supreme Soviet of the USSR and a member of the Central Committee of the Communist Party from 1954 to 1966.  From 1947 to 1953 he was Minister of Justice for the Ukrainian Soviet Socialist Republic and from August 1953 to February 1963 its prosecutor general (at that time subordinate to the Prosecutor General of the Soviet Union). Arkady Leontiiovych Kiselev (Ukrainian: Аркадій Леонтійович Кисельов; 1880, Kiev - 22 September 1938, Kiev) was a politician of the Ukrainian Soviet Socialist Republic, serving as its Prosecutor General from 1935 to 1936. Arkady Semyonovich Ukupnik (Russian: Арка́дий Семёнович Уку́пник ; born February 18, 1953, Kamianets-Podilskyi, Khmelnytskyi Oblast, Ukrainian Soviet Socialist Republic) is a Russian composer, pop singer, actor, producer groups Car-Man. Arkady Maksimovich Abaza (Абаза, Аркадий Максимович, 1843, Sverdlikovo, Kursk Governorate – January 16 [O.S. January 3] 1915 , Kursk) was a Russian composer, journalist and pianist.  He studied in St. Petersburg with Alexander Dreyschock for fortepiano and singing in the class of Camille Everardi.  Later he was an associate of Hans von Bulow.  He taught and was director of a music school in Sumakh (1877-81) and then in Kursk (1882-1915).  Among his students, at Kursk, was Nikolai Roslavets. Roman Andriyovych Rudenko (Ukrainian: Роман Андрійович Руденко , Russian: Рома́н Андре́евич Руде́нко , 30 July 1907 – 23 January 1981) was a Ukrainian Soviet lawyer.  He was the prosecutor of the Ukrainian Soviet Socialist Republic from 1944 to 1953 and Chief prosecutor of the entire Soviet Union after 1953.  He is also well known for acting as the Soviet Chief Prosecutor at the main trial of the major Nazi war criminals at the Nuremberg Trials and Chief Prosecutor at the Trial of the Sixteen.  He held military rank as a Lt.General at the time he served at Nuremberg.
Answer: Nikolai Roslavets