Question: Muslim Mahammad oglu Magomayev is the grandfther of what Soviet Azerbaijani singer who was dubbed the King of Songs?

Context:
Aliagha Vahid
Aliagha Vahid (Azerbaijani: "Əliağa Vahid" ), born Aliagha Mammadqulu oglu Isgandarov (17 February 1895, Baku – 1 October 1965, Baku), was an Azerbaijani poet and Honoured Artist of the Azerbaijan SSR (1943).
 He was known for reintroducing medieval ghazel style in Soviet Azerbaijani poetry.
Rauf Atakishiyev
Rauf Israfil oglu Atakishiyev (Azerbaijani: "Rauf Atakişiyev" ) was a Soviet Azerbaijani singer, pianist, singer-soloist, People's Artist of the Azerbaijan SSR (1967), professor (1972).
Mikayil Alakbarov
Mikayil Mahammad oglu Alakbarov (Azerbaijani: "Mikayıl Məhəmməd oğlu Ələkbərov" ; 1924– 13 October 1943) was an Azerbaijani Red Army man and a posthumous Hero of the Soviet Union.
 Alakbarov was posthumously awarded the title on 26 October 1943 for his actions during the Battle of the Dnieper, during which he reportedly repulsed 14 counterattacks and was seriously wounded.
Muslim Magomayev (musician)
Muslim Magometovich Magomayev (Azerbaijani: "Müslüm Məhəmməd oğlu Maqomayev", 17 August 1942 – 25 October 2008), dubbed the "King of Songs" and the "Soviet Sinatra" was a Soviet Azerbaijani baritone operatic pop singer.
 He achieved iconic status in Russia and the post-Soviet countries for his vocal talent and charisma.
Jamil Ahmadov
Jamil Mahammad oglu Ahmadov (Azerbaijani: "Cəmil Məmməd oğlu Əhmədov" ; 1924 – 2 September 1944) was an Azerbaijani Red Army lieutenant and a Hero of the Soviet Union.
 Ahmadov was posthumously awarded the title on 24 March 1945 for his actions in Operation Bagration.
 Ahmadov reportedly continued to command his platoon while wounded and died of his wounds.
Afrasiyab Badalbeyli
Afrasiyab Badal oglu Badalbeyli (Azerbaijani: "Əfrasiyab Bədəlbəyli" ) (19 April 1907, Baku – 6 January 1976, Baku) was a Soviet Azerbaijani composer, with noble Iranian origins (he was the descendant of Bahman Mirza and Abbas Mirza, " conductor and music critic, author of the music and libretto of "Giz Galasi" ("The Maiden Tower"), the first Azerbaijani ballet and the first ballet in the Muslim Orient.
Muslim Magomayev (composer)
Muslim Mahammad oglu Magomayev (Azerbaijani: "Müslüm Maqomayev" ) (18 September 1885 in Grozny – 28 July 1937 in Nalchik) was an Azerbaijani and Soviet composer and conductor.
 He is the grandfather and a namesake of Azerbaijani opera singer Muslim Magomayev.
Arif Heydarov
Arif Nazar oglu Heydarov (Azeri: Arif Nəzər oğlu Heydərov, June 28, 1926, Agdash—June 29, 1978, Baku) was a Soviet Azerbaijani state figure and a General-Lieutenant of the Soviet Azerbaijani Ministry of Internal Affairs.
 He headed this ministry from March 19, 1970 until his death.
 Previously he used to work in security agencies.
 Heydarov was shot by Shusha prison officer Zia Muradov in his office, along with Deputy Minister of Internal Affairs Salahaddin Kazimov.
 Muradov then shot himself.
Ilyas Afandiyev
Ilyas Mahammad oglu Afandiyev (Azerbaijani: "Əfəndiyev İlyas Məhəmməd oğlu" ) was an Azerbaijani and Soviet writer, member of Azerbaijan Union of Writers (1940), Honored Art Worker of Azerbaijan (1960), laureate of the State Prize of Azerbaijan (1972) and People’s Writer of Azerbaijan (1979).
Nargiz (opera)
Nargiz (Azerbaijani: "Nərgiz" ) – is the second opera by Muslim Magomayev, Azerbaijani composer and Honored Art Worker of the Azerbaijan SSR, written in 1935.
 Mammed Said Ordubadi is the author of a libretto to the opera.
 It is considered the most significant composition of Muslim Magomayev.
 Music of the opera consists of folk songs of Azerbaijan.
 In 1938, the opera was shown during the Decade of Azerbaijani Arts in Moscow, with the editorship of Reinhold Glière.
 It is also noted that, the opera narrates about a struggle of Azerbaijani peasants for the Soviet Power.
 “Nargiz” is the first Azerbaijani opera on a modern theme.

Answer: Muslim Magometovich Magomayev