Question: What is the country of citizenship for the performer of Heartbeat Radio?

full_context: Document 1: Faces Down: Faces Down is the first album released by Norwegian singer/songwriter Sondre Lerche, in 2001. It was released in 2002 in the United States, and in 2003 in Japan. All songs on the album were written by Lerche.
Document 2: Lost in a Moment: Lost in a Moment is the third album by Norwegian musician Lene Marlin. It was released on 13 June 2005.
Document 3: III (Stanton Moore album): III is Stanton Moore's third studio solo album released 2006. As each of Moore's solo albums have had unique character, "III" features keyboardist Robert Walter and guitarist Will Bernard for a 1970s-like soul funk with a "sense of authenticity" as "artists who live it."
Document 4: Little Broken Hearts: Little Broken Hearts (stylized as ...Little Broken Hearts) is the fifth solo studio album by American singer and songwriter Norah Jones, released on April 25, 2012, through Blue Note Records. The album was produced by Brian Burton, better known as Danger Mouse, who is notable for his production work with The Black Keys, Gnarls Barkley, and Beck among others.
Document 5: The K&D Sessions: The K&D Sessions is the second DJ mix compilation album by the Vienna-based duo Kruder & Dorfmeister. Released by Studio !K7 in 1998 to glowing reviews, the album features two original songs with the remixes.
Document 6: Cadore 33: Popular Spanish singer Sergio Dalma followed 2011's four-times platinum "Via Dalma II" with "Cadore 33." Unlike Dalma's previous two albums, which consisted of Spanish-language covers of Italian songs, this marked his return to performing original material.
Document 7: Heart Beat (Wang Leehom album): Heart Beat () is the 13th album of the American Taiwanese R&B artist and composer Leehom Wang. The album was released on 26 December 2008. According to Taiwan's G-Music chart the album is the sixth best selling album in Taiwan in 2009.
Document 8: Duper Sessions: Duper Sessions is the third album by Norwegian singer/songwriter and guitarist Sondre Lerche, released in Norway on 27 February 2006 and in the U.S. on March 21, 2006. The album entered the Billboard Official Top Contemporary Jazz Albums Chart at #5. The album was the 4th most added on the CMJ Jazz Chart during the first week of April 2006.
Document 9: Heartbeat Radio: Heartbeat Radio is the fifth album by Norwegian singer-songwriter and guitarist Sondre Lerche. The album was released in the U.S. on September 8, 2009 and in Europe on September 14. The album was released on Rounder Records, and is distributed digitally, on CD and on vinyl LP.
Document 10: Heartbeat Song (Kelly Clarkson song): "Heartbeat Song" is a song by American singer Kelly Clarkson from her seventh studio album, "Piece by Piece" (2015). Written by Mitch Allan, Audra Mae, Kara DioGuardi, and Jason Evigan, the song is an uptempo synthpop track produced by Greg Kurstin. Lyrically, it sings of meeting a person who restores someone's faith in love. Inspired by 1980s synthpop music, "Heartbeat Song" was released by RCA Records as the album's lead single on January 12, 2015.
Document 11: Heartbeat (Don Johnson song): "Heartbeat" is a 1986 song by Don Johnson. It was released as a single and included on the album of the same name. It became an international hit, peaking at number five on the "Billboard" Hot 100, and charting highly in many European countries.
Document 12: Spark (Marit Larsen album): Spark is the third album from Norwegian singer-songwriter Marit Larsen, and was released on November 18, 2011. The information was made available via Marit Larsen's Tumblr page. On 31 July 2011 Marit Larsen began to post information about her third album on her Tumblr. On 7 October 2011 she announced the name of the album and track list. The first single, "Coming Home" had premiered on NRK P3 and on her Facebook page on 15 October. The album produced two singles; "Coming Home" and "Don't Move". The album spawned 2 number one songs in the Philippine Top 100 Songs Chart where in "Coming Home" stayed atop for 4 consecutive weeks, which gave Marit her first number one song in the Philippines as a solo artist and her non-single song "Last Night" stayed for 2 consecutive weeks in the early 2012, serving as her second number one song.
Document 13: Heartcore (Kurt Rosenwinkel album): Heartcore is Kurt Rosenwinkel's fifth album as a band leader. The album was fully produced by Rosenwinkel and Q-Tip of popular hip-hop group A Tribe Called Quest. The album is a departure musically from Rosenwinkel's previous work, as he contributes keyboard, drums, and voice, at times creating soundscapes completely on his own in his personal studio. Says Rosenwinkel, "There is a place, musically, that’s above the categories. This record – it’s jazz. And it’s much more". While much of the album features varied instrumentation and personnel, a few tracks rely on a live performance aspect, reminding the listener of the connection to the jazz tradition. Rosenwinkel cites the influence of Arnold Schoenberg in the harmonic textural construction on Heartcore.
Document 14: Heart for Sale: Heart for Sale is the second studio album by Belgian singer-songwriter, Tom Dice. It was released on the May 3, 2012. The album reached number 11 in Belgium. The album includes the singles "Utopia", "Out At Sea", "Drive Me to Paris" and "Let Me In".
Document 15: Torbjørn Sunde: Torbjørn Sunde (born 16 February 1954 in Oslo, Norway) is a Norwegian jazz musician (trombone), known from several recordings with such as Terje Rypdal, Edward Vesala, Jon Balke, Knut Værnes, Rickie Lee Jones, Randy Crawford, Dr. John, Jan Eggum, Jan Garbarek, and Mezzoforte.
ground_truth: Norway
sub_queries: Heartbeat Radio >> performer Answer: Sondre Lerche
Sondre Lerche >> country of citizenship Answer: Norway