Saeko Zōgō (藏合 紗恵子 , Zōgō Saeko , born August 13, 1984) is a Japanese voice actress and singer from Tsuyama, Okayama Prefecture, Japan.
 She is affiliated with Production Ace.
 Her major roles are: Ichiyon (M14) in "Upotte!!
", Nadeshiko Sōma in "Isuca", Freon Flamel in "Sky Wizards Academy", Souji Okita in "Dai-Shogun - Great Revolution", and Shiori Itsuka in "Date A Live II".
 She and fellow voice actress Kaori Sadohara were part of a duo called Two-Formula who sang songs on "Isuca" and "Noucome".
Michiyo Nakajima (中嶋 美智代 , Nakajima Michiyo , born 2 January 1973 in Saitama Prefecture) is a Japanese actress, voice actress and former pop singer.
 Nakajima made her debut on 30 January 1991.
 Her final JPOP release was on 10 June 1998.
 She sang the ending theme for the animated (anime) version of "Ranma ½", Season 5 (1991) - "Red Poppy" (Hinageshi).
 She also sang the opening and ending themes of "Floral Magician Mary Bell" (1992–93).
Nancy Jean Cartwright (born October 25, 1957) is an American voice actress, film and television actress, and comedian.
 She is known for her long-running role as Bart Simpson on the animated television series "The Simpsons".
 Cartwright also voices other characters for the show, including Nelson Muntz, Ralph Wiggum, Todd Flanders, Kearney, and Database.
Matsuri Mizuguchi (水口 まつり , Mizuguchi Matsuri , born October 28, 1986 in Yamagata Prefecture) is a Japanese voice actress who started her career in 2007.
 She is affiliated with Yellowtail.
 This voice actress shares the same exact date of birth and age as another unrelated Japanese voice actress and singer, Aki Toyosaki.
Tomoe Tamiyasu (民安 ともえ , Tamiyasu Tomoe , born March 20) is a Japanese voice actress and singer, generally performing for adult games, and is from Hiroshima, Japan.
 She debuted in 2005 as a voice actress and started her singing career in 2006.
 Tomoe has been the host of three Internet radio shows, and has been a guest on a fourth.
 She is also known under the name Tomoe Tamiya, such as when she voiced Rin Natsume from Key's visual novel "Little Busters!
".
 She also sang songs on an image vocal album released for "Little Busters!"
 for Rin.
 She attended Anime Expo in 2012 with the industry guest MangaGamer.
 She married voice actor Keisuke Nakamura in 2015.
Minori Chihara (茅原 実里 , Chihara Minori , born November 18) is a Japanese voice actress and singer who has had roles in several anime series.
 As a voice actress she is under the agency Avex Planning & Development, she is well known as voice actress for her role as Yuki Nagato in "The Melancholy of Haruhi Suzumiya" and Leon in "The iDOLM@STER", while in her musical career, she has been signed under King Records and is currently with Lantis.
 She was born in the city of Utsunomiya, Tochigi and was raised in Saitama.
 She is affectionately referred to as Minorin (みのりん ) by her fans.
Emiri Katō (加藤 英美里 , Katō Emiri , born November 26, 1983 in Fussa, Tokyo) is a Japanese voice actress and singer working for 81 Produce.
 At the 2nd Seiyu Awards, she won Best New Actress with her roles in "Powerpuff Girls Z" as Momoko Akatsutsumi/Hyper Blossom and "Lucky Star" as Kagami Hiiragi.
 She also shared a Best Singing Award with the rest of the "Lucky Star" girls for the theme song "Motteke!
 Sailor Fuku".
 At the 6th Seiyu Awards, she won Best Supporting Actress with roles such as Kyubey in "Puella Magi Madoka Magica", Kiko Kayanuma in "Darker Than Black", and Mey-Rin in "Black Butler".
 She and fellow voice actress Kaori Fukuhara were in a duo music group called Kato*Fuku, which sang theme songs for "When Supernatural Battles Became Commonplace" and "Battle Spirits Saikyo Ginga Ultimate Zero".
 Kato*Fuku released three albums from 2012 to 2015, and disbanded in 2016.
Megumi Toda (戸田 めぐみ , Toda Megumi , born December 8, 1990) is a Japanese voice actress from Tokyo.
 She is affiliated with Kenyu Office.
 She was regular on the Animate Pia Channel which was broadcast on Nico Nico.
 Her major roles include Hajime Shinoda in "New Game!
", Kiitan in "Etotama" and Yuzu Iizuka in "Sakura Trick".
 As part of the "Etotama" cast, she sang on the theme song under the group Soruaru BOB on a single called "blue moment" that reached number 49 on the Oricon charts.
 She also sang the theme songs for "New Game!"
 under the group forfolium; the singles "Sakura" and "Now Loading!!"
 reached numbers 33 and 42 on Oricon.
 As part of the Idolmaster cast, she sang on one of the singles which reached number 22.
Yoshiko Horie (Japanese: 堀江 由子 , Hepburn: Horie Yoshiko , born September 20, 1976) , known by her stage name Yui Horie (堀江 由衣 , Horie Yui ) , is a Japanese voice actress and singer, affiliated with VIMS and Starchild.
 She has been affectionately nicknamed ""Hocchan"" (ほっちゃん ) by her Japanese fans.
 She debuted as a voice actress in 1997, releasing her debut single ""My best friend"" on .
 Since then, she has been involved in excess of 350 productions in addition to promotional material, concert performances, as well as charting several albums and singles.
 She won the award for Best Supporting Voice Actress in the 4th Seiyu Awards.
"Do the Bartman" is a song from the 1990 "Simpsons" album "The Simpsons Sing the Blues".
 It was performed by "The Simpsons" cast member Nancy Cartwright (the voice of Bart Simpson), with backing vocals from Michael Jackson, alongside additional vocals from Dan Castellaneta (voice of Homer Simpson).
 It was produced and written by American recording artist Bryan Loren, and released as a single on November 20, 1990.

Question: What is the nationality of the voice actress who sang "Do the Bartman"?
Answer: American