question: What nationality was the person whose music inspired the Folias Flute and Guitar Duo ?
answer: Argentine
context: Title: The Send
  Passage: The Send was an alternative rock project of Falling Up ex-guitarist, Joseph A. Kisselburgh of Albany, Oregon, currently signed to Tooth & Nail Records.  His debut album, "Cosmos", was released on July 31, 2007.  Before this was even released, though, his song, "The Fall", was featured on "Charlotte's Web: Music Inspired By The Motion Picture", a compilation album with music inspired by the 2006 movie of Charlotte's Web.  On June 23 The Send began a winter retreat with labelmate, Hawk Nelson, around Major League Baseball venues.  The first single off "Cosmos" was "An Epiphany," which quickly gained some success, reaching No. 5 on Christian Hit Radio.
  Title: Rodrigo y Gabriela
  Passage: Rodrigo y Gabriela (Rodrigo and Gabriela) are a Mexican classical guitar duo whose music is influenced by a number of genres including nuevo flamenco, rock, and heavy metal.  The duo's recordings consist largely of instrumental duets on the flamenco guitar.  Currently residing in Mexico City, they began their career in Dublin, Ireland, during an eight-year stay.  They have released five studio albums, three live albums and one EP.  In 2011 they collaborated with Hans Zimmer on the while also contributing to the soundtrack for the "Shrek" prequel "Puss in Boots".  They have toured internationally and in May 2010, performed at The White House for President Barack Obama.
  Title: Astor Piazzolla
  Passage: Astor Pantaleón Piazzolla (] , ] ; March 11, 1921July 4, 1992) was an Argentine tango composer, bandoneon player, and arranger.  His oeuvre revolutionized the traditional tango into a new style termed "nuevo tango", incorporating elements from jazz and classical music.  A virtuoso bandoneonist, he regularly performed his own compositions with a variety of ensembles.
  Title: Kaltchev Guitar Duo
  Passage: Kaltchev Guitar Duo is a guitar duo from Bulgaria.
  Title: Folias Flute and Guitar Duo
  Passage: Folias Flute and Guitar Duo is an American performer/composer chamber music duo group consisting of flutist Carmen Maret and guitarist Andrew Bergeron.  Bergeron and Maret met at Michigan State University while finishing their Master’s Degrees in Music and they were married in 2003.  The formation of the duo was brought about by a mutual inspiration for the music of Astor Piazzolla and through their work as Argentine tango dance band leaders.
citations: Astor Piazzolla Folias Flute and Guitar Duo