Violinists Marc Ramirez and Olivia Hajioff, who together form the violin and violin/viola duo Marcolivia, have concertized extensively throughout the United States, Russia, France, Germany, Austria, Switzerland, Monaco, Italy, England, Canada, Mexico and Japan. They have performed in many of the world's cultural centers, including New York, Boston, Chicago, Washington, Los Angeles, Moscow, London, Tokyo, and Mexico City. Their performances have been featured on radio and television broadcasts, seen and heard throughout North America, Europe and Asia. They have performed chamber music at the Kennedy Center in Washington, DC, the Ravinia Festival in Chicago, the Weill Recital Hall in Carnegie Hall, and with chamber music notables including Leon Fleisher, Awadagin Pratt and Edgar Meyer.

Marc and Olivia have been recipients of a Fulbright fellowship, and prizes from competitions including the BBC Young Musician of the Year, the European Violin Competition, and the Henryk Szerying Violin Competition, among others. In addition, they were the only chamber music finalists in the Concert Artists Guild International Competition, 2000. Marcolivia presents masterclasses worldwide and are artists-in-residence at the Tokyo College of Music. The duo has been on the faculty of Shenandoah University, Las Vegas Summer Music Festival, Dartington International Summer Festival, Blue Mountain Festival, Garth Newel, and the Adriatic Music Festival [Italy]. Marcolivia is on the roster of the Millenium Stage at the Kennedy Center and the Touring Artists for the Virginia Commission for the Arts.