Born in Guatemala City, Xavier studied piano at the National Conservatory of Guatemala with Consuelo Medinilla. At age 18, he was awarded the first-prize at the Augusto Ardenois National Piano Competition and third-prize at the Rafael Alvarez Ovalle Composition Competition in Guatemala. He continued his piano studies in the United States at WKU with Argentinean pianist Sylvia Kersenbaum and with Russian pianist Sergei Polusmiak in Cincinnati. He also attended master-classes with pianists Massimiliano Damerini and Daniel Rivera in Italy. Xavier has performed in different venues in the United States, Europe and Latin America and has been a soloist with the Guatemalan National Symphony Orchestra, Orchestra Augusto Ardenois, and the Camellia Symphony in Sacramento. As a composer, Xavier did most of his studies privately with Rodrigo Asturias. In 2013 he won the Silver Medal at the fourth International Antonin Dvorak Composition Competition in Prague. He studied music theory at the University of Cincinnati where his thesis was ranked no. 4 in the National Best-Seller Dissertation List. He obtained his Ph.D. in composition at the University of California San Diego where he studied with Roger Reynolds, Philippe Manoury, and Chinary Ung. His compositions have been performed in diverse festivals such as Festival Musica in Strasbourg, France, Darmstadt Composition Summer Courses in Germany, June in Buffalo, SICPP in Boston, Opera Theater Festival of Lucca, Italy and by ensembles such as Accroche Note, Ensemble Signal under Brad Lubman, UCSD Palimpsest, Fifth House Ensemble, Forward Motion Ensemble, Mivos Quartet, the San Francisco Contemporary Music Players under Steven Schick and the Guatemalan National Symphony. Xavier also holds a law degree from Salmon P. Chase College of Law and his diverse interests include art law, copyright, poetry, and tango.