Question: The Lockenhaus Chamber Music Festival has included performances by the solo pianist who has held what country's citizenship since 1972?

Context articles: Vladimir Ashkenazy
Lockenhaus
Julie Landsman
Tuckamore Festival
Anne-Marie McDermott
Beigang International Music Festival
Kuhmo Chamber Music Festival
Cynthia Phelps
Mimi Stillman
Lockenhaus Chamber Music Festival

Vladimir Davidovich Ashkenazy (Russian: Влади́мир Дави́дович Ашкена́зи , "Vladimir Davidovich Ashkenazi"; born 6 July 1937) is an internationally recognized solo pianist, chamber music performer, and conductor.
 He is originally from Russia and has held Icelandic citizenship since 1972.
 He has lived in Switzerland since 1978.
 Ashkenazy has collaborated with well-known orchestras and soloists.
 In addition, he has recorded a large storehouse of classical and romantic works.
 His recordings have earned him five Grammy awards plus Iceland's Order of the Falcon.
Lockenhaus (Hungarian Léka; Croatian Livka) is a town in the district of Oberpullendorf in the Austrian state of Burgenland.
 The town is well known for the annual Lockenhaus Chamber Music Festival founded by violinist Gidon Kremer.
Julie Landsman (born April 3, 1953) is an American-born French horn player and teacher.
 Formerly Principal Horn of the Metropolitan Opera from 1985-2010, Landsman now primarily performs chamber music.
 Prior to her appointment with the Metropolitan Opera Orchestra, Landsman served as co-principal horn with the Houston Symphony, and has toured internationally with the New York Philharmonic and Orpheus Chamber Orchestra.
 Julie Landsman is on the faculties of The Juilliard School and the Bard College Conservatory of Music, and her students hold prominent positions in orchestras throughout the world.
 A graduate of Juilliard, her teachers have included James Chambers, Howard Howard and Carmine Caruso.
 Landsman is featured horn soloist on the recording of Wagner's Ring Cycle with the Metropolitan Opera conducted by James Levine, and has appeared on numerous other recordings.
 Music festival appearances have included the Marlboro Music Festival, Sarasota Music Festival, Chamber Music Northwest, Santa Fe Chamber Music Festival, Aspen Music Festival and School, Mainly Mozart Orchestra, and La Jolla SummerFest.
 Landsman grew up in Brooklyn.
The Tuckamore Chamber Music Festival is a chamber music festival in St. John's, Newfoundland, Canada.
 It is traditionally held annually in August for two weeks.
 The festival was co-founded in 2000 by violinist Nancy Dahn and pianist Timothy Steeves, classical musicians who perform together as Duo Concertante.
 Dahn and Steeves are the current artistic directors of the festival.
Anne-Marie McDermott is a classical music pianist, and member of the Chamber Music Society of Lincoln Center.
 She is also the artistic director of the Bravo!
 Vail Valley Music Festival, and Artistic Director of the Ocean Reef Chamber Music Festival in Key Largo, FL and the Avila Chamber Music Celebration in Curaçao.
The Beigang International Music Festival () is a project of the "Beigang Philharmonic Association" (in Chinese: 雲林縣北港愛樂協會) and takes place in Beigang, Yunlin County, Taiwan.
 Since its inception in 2006, the festival has grown and developed to become the biggest international music festival in Yunlin County.
 The festival has a series of concerts, mostly wind music (for solo, chamber music and wind band), and an educational program within the "Chia-Hu Conservatory" (in Chinese: 陳家湖音樂學院).
 The festival also organizes an intercultural program for musicians from different countries.
 The Artistic director of the Beigang International Music Festival is the pianist Heinz Chen.
Kuhmo Chamber Music Festival (Finnish: Kuhmon Kamarimusiikki) is an international chamber music festival held every July for two weeks in Kuhmo, Finland.
 It is the largest chamber music festival in Finland in terms of sold tickets.
 The festival attracts 6000-8000 visitors annually, with 95% of them being from Finland.
 The number of concerts held within the two weeks is around 70.
 Approximately 170 artists from Finland and abroad perform at the festival.
 The Kuhmo Chamber Music Festival also offers music courses, master classes and chamber music workshops that are taught by the festival artists.
Cynthia Phelps (born 1961 in Hollywood, Los Angeles, California) is an American violist whose versatile career involves work as a chamber musician, solo artist, and orchestral musician.
 Phelps is currently the Principal Violist of the New York Philharmonic, a position to which she was appointed in 1992.
 She is a former faculty member of the Manhattan School of Music and is currently a faculty member at the Juilliard School.
 She has appeared as a soloist with numerous orchestras throughout the world including the Minnesota Orchestra, New York Philharmonic, San Diego Symphony, Orquesta Sinfonica de Bilbao, and Hong Kong Philharmonic.
 As a chamber musician, Ms. Phelps performs regularly with the Chamber Music Society of Lincoln Center, Bargemusic, the Boston Chamber Music Society, the Chicago Chamber Musicians, La Musica, Seattle Chamber Music Society, and the Bridgehampton Chamber Music Festival.
 Phelps has performed with some of the world's greatest musicians including Isaac Stern, Itzhak Perlman, Pinchas Zukerman, Yo-Yo Ma, Lynn Harrell, and Yefim Bronfman, among many others.
 She has toured internationally as a member of the Zukerman and Friends Ensemble, appeared with the Guarneri String Quartet, and performed in recital in Paris, Rome, London, and Cardiff, Wales, as well as in Boston, Los Angeles, New York and Washington.
 Ms. Phelps is a recipient of the Pro Musicis International Award, and a top prize winner at both the Lionel Tertis International Viola Competition and the Washington International String Competition.
 She has recorded for the Marlboro Recording Society, and the Covenant, Nuova Era, Polyvideo, Virgin Classics labels, and most recently Cala Records where her first solo CD was released.
 Her appearances on television and radio have included "Live from Lincoln Center" on PBS, National Public Radio, Radio France, and RAI in Italy.
Mimi Stillman (born Boston) is a prominent concert flutist.
 She has been hailed by The New York Times as "a consummate and charismatic performer."
 Called "the coolest flute player" by Philadelphia Magazine, she is critically acclaimed for her dazzling artistry and communicative powers.
 A Yamaha Performing Artist, she has appeared as soloist with orchestras including The Philadelphia Orchestra, Bach-Collegium Stuttgart, Hilton Head Orchestra, Indianapolis Chamber Orchestra, Orquesta Sinfónica de Yucatán, Orquesta Sinfónica Carlos Chávez (Mexico City), Oklahoma City Philharmonic, Orchestra 2001, Ocean City Pops, Spartanburg Philharmonic Orchestra, Chamber Orchestra of the Triangle, and Curtis Chamber Orchestra.
 She has appeared as recitalist and chamber musician at The Kennedy Center, Carnegie Hall, the Kimmel Center for the Performing Arts, Philadelphia Chamber Music Society, Bard College, La Jolla Chamber Music Society, Kingston Chamber Music Festival, Isabella Stewart Gardner Museum, Bay Chamber Concerts (ME), Verbier Festival (Switzerland), Israeli radio Kol HaMusica, National Sawdust, Roulette, and Festival delle Nazioni (Italy).
The Lockenhaus Chamber Music Festival (alternate: "Internationales Kammermusikfest Lockenhaus"') is an annual chamber music festival located in the Austrian state of Burgenland.
 It is held at three venues in Lockenhaus: Burg Lockenhaus castle, Church of St. Nikolaus, and the old monastery of Lockenhaus.
 The New York Times has referred to as perhaps one of the "two most refined music festivals of all", and a European cultural treasure.
 While both older and younger talents perform, notable performers include Vladimir Ashkenazy, Nikolaus Harnoncourt, Heinz Holliger, Cho-Liang Lin, and András Schiff.
 According to its founder, violinist Gidon Kremer, the Lockenhaus Chamber Music Festival philosophically resembles the Marlboro Music Festival in Vermont, US.