Question: What Ukrainian singer is known for their deep contralto and "Mamo"?
Context: Anna Vladimirovna Sedokova (Ukrainian: А́нна Володи́мирівна Сєдоко́ва ; Russian: А́нна Влади́мировна Седоко́ва , born 16 December 1982) is a Ukrainian singer, actress and television presenter of Russian origin.  Sedokova came to prominence in 2002 as a member of pop girl group Nu Virgos, known in the CIS countries as VIA Gra and in which she was nicknamed Anya (Ukrainian; Russian: Аня).  Following two years in the "golden line-up" of the group, she pursued a solo music career in 2006.  The singer released a string of singles until her debut album, "Lichnoe", was released in 2016 to commercial success, peaking at number two in Russia. Gaita-Lurdes Essami (Ukrainian: Гайта-Лурдес Ессамі ), better known under stage name Gaitana (Ukrainian: Гайтана ), born on 24 March 1979 in Kiev), is a Ukrainian singer and songwriter of Ukrainian and Congolese descent.  Her music combines elements of jazz, funk, soul, and folk music.  Gaitana represented Ukraine in the Eurovision Song Contest 2012 in Baku, Azerbaijan. Svitlana Serhiivna Loboda (Russian: Светлана Сергеевна Лобода , Ukrainian: Світлана Сергіївна Лобода , born 18 October 1982 in Kiev, Ukrainian SSR), also known by the stage name LOBODA, is a Ukrainian singer and composer.  Loboda represented Ukraine in the Eurovision Song Contest 2009 and finished in 12th place with 76 points. Anastasia Konstantinivna Prikhodko (Ukrainian: Анастасія Костянтинівна Приходько ; Russian: Анастаси́я Константи́новна Прихо́дько : Anastasia Konstantinovna Prikhodko [also spelt "Prykhodko"]; born April 21, 1987) is a Ukrainian folk rock and traditional pop singer, known for her deep contralto.  She won the Russian "Star Factory" contest in 2007 and represented Russia in the Eurovision Song Contest on May 16, 2009 in Moscow, where she finished 11th.  In 2014, she vowed never to perform in Russia again because she accused the country of occupying parts of Ukraine. Andriy "Kuzma" Kuzmenko (Ukrainian: Андрі́й Ві́кторович Кузьме́нко ; 17 August 1968 – 2 February 2015) was a prominent Ukrainian singer, poet, writer, TV presenter, producer and actor.  He was best known as the lead singer of the famous Ukrainian rock band Skryabin, founded in 1989. Alena Vinnitskaya (Ukrainian: Альона Ві́нницька "Aliona Vinnytska"; born Olha Viktorivna Vinnytska (Ukrainian: О́льга Ві́кторівна Ві́нницька ) on 27 December 1974, Kiev, in the Ukrainian SSR of the Soviet Union – in present-day Ukraine) is a Ukrainian singer.  She is an author and performer. Irina Alekseevna Zabiyaka (Russian: Ирина Алексеевна Забияка ) (born 20 December 1982) is a Russian singer and lead vocalist, songwriter in the popular Russian group Chi-li (Russian: Чи-ли ).  She is known for her deep contralto voice. Varvara Vasilyevna Panina (Варва′ра Васи′льевна Па′нина; 1872, Moscow, Russian Empire, - May 28, 1911, Moscow, Russian Empire) was a Russian singer of Romani origins, famous for her deep contralto, one of the Russian popular music stars of the early 20th century. Taisia Povaliy (also Taisia Povalij, Taisiya Povaliy) (Ukrainian: Таїсія Миколаївна Повалій ) (born 10 December 1964) is a Ukrainian singer and actress popular predominantly in Ukraine and Russia.  In 2015 Ukrainian parliament made a decree to remove her as Ukrainian National Singer because she does concerts in Russia. "Mamo" (Ukrainian Cyrillic: Мамо; English translation: "Mum"; Russian translation: Мама (Mama)) is a song by Ukrainian singer Anastasia Prikhodko.  It is best known as Russia's entry in the Eurovision Song Contest 2009, held in the Russian capital of Moscow.  The song is performed in both Russian and Ukrainian, and was composed by Konstantin Meladze and Diana Golde.  The song was first submitted (in the original full Ukrainian variant) for the Ukrainian preselection for that year, but failed to qualify, winning afterwards the Russian preselection.
Answer: Anastasia Konstantinivna Prikhodko