Sofia Eugenia Koutsovitis, known professionally as Sofia Rei, is an Argentinian vocalist, songwriter, producer, and educator. A classically trained mezzo-soprano, Rei's influences include South American folk styles, jazz, pop, new classical and electronic music. Singing in Spanish, English and Portuguese, her voice was described by The Boston Globe as "possessing a voluptuously full voice, comprehensive command of Latin American rhythms, and encyclopedic knowledge of folkloric forms from Argentina, Peru, Colombia, and Uruguay." She was born and raised in Buenos Aires and has been based in New York since 2005.