Question: WHo is a Grammy winning American musician of Armenian descent, Armen Nalbandian or Arto Tunçboyacıyan?

full_context: Document 1: Aref Durvesh: Aref Durvesh is a celebrated and prolific tabla artist who has recorded and performed with Badmarsh & Shri, Sting, Susheela Raman, Cheb Mami, Jeff Beck, Visionary Underground, and is also one of the longest-serving members of Nitin Sawhneys band, having performed on all of his albums as well as all his UK and international tours. His father was a musician, a disciple of Bismillah Khansahib, and a world-renowned shehnai player. Aref grew up with Indian music all around him and fell in love with tabla. Aref has taken traditional tabla performance into a new dimension by integrating it into contemporary urban music, jazz, hip hop and fusion, as well as being a virtuoso in the traditional skills. He is now extending his talents to producing his own album and performing live under his own name, while continuing to tour with Nitin and Shusheela.
Document 2: Arto Tunçboyacıyan: Arto Tunçboyacıyan (Armenian: Արտո Թունջբոյաջյան ) (born 4 August 1957 in Istanbul) is a Grammy winning American musician of Armenian descent. An avant-garde folk artist (singer, multi-instrumentalist), he appeared on more than 200 records in Europe before arriving in the United States, where he went to work with numerous jazz legends including Chet Baker, Marc Johnson, Al Di Meola, and Joe Zawinul as well as a semi-regular stint with Paul Winter and the Earth Band. Arto fronts his own group called the Armenian Navy Band. He also worked with Turkish singer Sezen Aksu and the Greek singer Eleftheria Arvanitaki. His brother Onno Tunç was also a musician. He is also a member of the band Night Ark. He has won a Grammy award.
Document 3: Artostan: Artostan is an album by Arto Tunçboyacıyan, recorded in 2004 and released in 2005.
Document 4: Nubar Alexanian: Nubar Alexanian is a documentary photographer whose work has been featured in major magazines in the United States and Europe including "The New York Times Magazine", "Life", "Fortune", "GEO", "Time" and "Newsweek". For the past 35 years he has travelled to more than 30 countries focusing on long term personal projects which describe the human condition. In 2008 he completed his fifth book, "NONFICTION" PHOTOGRAPHS BY NUBAR ALEXANIAN FROM THE FILM SETS OF ERROL MORRIS, (Walker Creek Press) a 15-year collaboration with filmmaker Errol Morris. Solo exhibitions of this work have been shown at The Walker Art Center, The Corcoran Gallery of Art, Caren Golden Fine Art Gallery (NYC) The Atlanta Contemporary Art Center, The LOOK3 Festival, and Clark University.
Document 5: Jazz in Armenia: Yerevan's first jazz band was formed in 1936, by composer Tsolak Vardazaryan. In 1938, composer Artemi Ayvazyan founded the Armenian State Jazz Orchestra, the first in the Soviet Union. The orchestra's first drummer Robert Yolchyan became an important artist of Soviet and Armenian jazz, developing his own style over time and continuing to play and give master-classes until his death in early 2000s. Other jazz bands were founded in Nairi Cinema, Yerevan Park of Communars, and others. In 1954, Konstantin Orbelyan organized an Estrada quintet for Armenian Radio. In 1966, young composer Martin Vardazaryan founded the Estrada Orchestra, renamed in the 1970s as the Estrada Symphonic Orchestra under the direction of Melik Mavisakalyan and Yervand Yerznkyan. Then Stepan Shakarian founded the jazz sextet Radio, and jazz trios were founded by David Azaryan and Artashes Kartalyan. Jazz pianist Levon Malkhasian ("Malkhas") founded his jazz trio with Armen Toutounjyan ("Chico") and Arthur Abrahamyan. In 1998, Malkhas become one of the initiators of the Yerevan International Jazz Festival.
Document 6: Oytun Ersan: Oytun Ersan (born June 22, 1978) is a Turkish Cypriot electric bass and upright bass player, composer and recording artist. He has collaborated with a wide variety of artists including Dave Weckl, Eric Marienthal, Gary Husband, Gerry Etkins, Mike Miller, Brett Garsed, Dean Brown, Okan Ersan, Karen Briggs, Prof. Rex Richardson, Wycliffe Gordon, Çağrı Sertel, Thomas Wolff, Savvas Savva, Tony Jones, Ola Onabule, Lloyd Chisholm, Paul Roos and Andrey Alpatov. He is an official artist endorser for some top profile companies like Fodera Guitars (USA), MarkBass (IT) and Gruv Gear (USA). In May 2015, he released his first Jazz Fusion album entitled "East Meets West" as seen in "Bass Musician Magazine" and "All About Jazz". His second Jazz Fusion album <nowiki>"Fusiolicious"</nowiki> will be released in early 2017 which gathers some of the most influential Jazz musicians in the world including Dave Weckl, Eric Marienthal, Gary Husband, Gerry Etkins, Dean Brown, Mike Miller, Brett Garsed, Karen Briggs and Okan Ersan. In addition to his production support, Mixing and Mastering of the album is carried out by Ric Fierabracci. Oytun Ersan has performed at various international festivals and venues till date.
Document 7: Serart: Serart is a collaboration album by two international Armenian musicians: Serj Tankian ("Ser-"), lead singer of System of a Down, and folk multi-instrumentalist Arto Tunçboyacıyan ("-art"). It was the first release on Tankian's own label, Serjical Strike Records.
Document 8: Ara Dinkjian: Ara Dinkjian (Armenian: Արա Տինքճեան ; born 1958) is an Armenian-American musician. He is the founder of the band Night Ark. Dinkjian is considered one of the top oud players in the world, his compositions have been recorded in thirteen different languages, which include the multi-platinum hit "Dinata", it was performed in the closing ceremonies of the 2004 Olympic Games in Athens.
Document 9: Vartan Malakian: Vartan Malakian (Armenian: Վարդան Մալաքյան, born February 14, 1947) is an artist and painter. He is the father of Daron Malakian, guitarist co-founder of System of a Down and Scars on Broadway. He was born on February 14, 1947 in Mosul, Iraq.
Document 10: Night Ark: Night Ark is an instrumental jazz quartet formed in 1986. The members are American-Armenian Ara Dinkjian, Turkish Armenian Arto Tunçboyacıyan, American-Armenian Armen Donelian and American Marc Johnson. The quartet's most famous piece is "Homecoming"; a famous version thereof set to lyrics in Greek is "Dynata", first sung by Eleftheria Arvanitaki. Homecoming was also the theme for the successful satirical Israeli television series 'HaHamishiya HaKamerit' ("The Chamber Quintet").
Document 11: Martan Mann: Martan Mann is an American jazz pianist and educator living in Boulder Creek, California. He performs with the Martan Mann Trio, the Martan Mann & Mannkind (contemporary jazz band) and has performed with George Young and Dmitri Matheny. A graduate of San Jose State University, San Francisco State University, Hawaii Pacific College, and the University of Hawaii, he is a musical director at Capitola Theater in Capitola, California and is on the board of directors for the Jazz Society of Santa Cruz, California. Jazz educational books include "Jazz Improvisation for the Classical Pianist" (1989), "New Age Improvisation for the Classical Pianist" (1994), and "Improvising blues piano" (1997). He is also the author of an jazz educational DVD, "Jazz Skills for Piano".
Document 12: Armen Nalbandian: Armen Nalbandian (born April 6, 1978 in Manchester, England) is a jazz pianist, composer, author, and activist from Los Angeles, California, known for his multidisciplinary collaborations in visual and fine art.
Document 13: Türkçe Sözlü Hafif Anadolu Müziği: Türkçe Sözlü Hafif Anadolu Müziği is an album by Arto Tunçboyacıyan released in 2004.
Document 14: Onno Tunç: Ohannes Tunçboyacıyan (a.k.a. Onno Tunç; Armenian: Օհաննես Թունչբոյաջյան ; December 20, 1948 - January 14, 1996) was a leading Armenian-Turkish musician, working mainly as a composer and an arranger. Tunç also played bass guitar and occasionally double bass, contributing to the albums of several musicians. He was the elder brother of musician Arto Tunçboyacıyan.
Document 15: AM (musician): AM is an American songwriter, musician, composer and producer born in Tulsa, Oklahoma, raised in New Orleans, and currently residing in the Los Angeles Echo Park neighborhood in California. AM or A.M. refers to his band and is also the moniker for this artist. Known for his seamless fusing of pop, soul, funk and world music, recording artist AM has released several critically acclaimed albums and toured the world. His newest collaboration with London artist/producer Shawn Lee, has been described by "Rolling Stone" as "hypnotic" and by Daytrotter as “intricate, groove-filled dreamscapes that are every bit organic and every bit mad genius."
ground_truth: Arto Tunçboyacıyan