He finished his bachelor degree in 1989. He continued his studies at the Tchaikovsky Conservatory in Moscow and the Escuela Superior de Música Reina Sofía in Madrid with Professor Dmitri Bashkirov, afterwards at the the Hochschule für Musik in Freiburg, Germany (completing his Master of Performance in 1994), the Fondazione per il Pianoforte in Como, Italy; and the Peabody Conservatory in Baltimore, US with Vitalij Margulis and Leon Fleisher. In addition, he participated in masterclasses given by Murray Perahia, Fou Ts’ong, Alexis Weissenberg, Karl-Ulrich Schnabel, Dietrich Fischer-Dieskau, Mstislav Rostropovich and György Kurtág, among many others. During almost a decade he received invaluable advice from Professor Ferenc Rados.

At a young age, Claudio Martínez Mehner won first prize with special mention in the German competition Bundeswettbewerb Jugend Musiziert. He was a finalist in the International Piano Competition Paloma O’Shea in Santander (1990) in Spain, and won first prizes in the international competitions Pilar Bayona in Zaragoza, Spain (1992), Fondation Chimay in Belgium (1993), and Dino Ciani in Milan, Italy (1993).

As a soloist he performed in most major cities in Europe, United States, Russia, Central America, Japan and Korea, with orchestras such as the Munich Philharmonic, the Moscow Philharmonic, Filarmónica of the Teatro Alla Scala, the Scottish Chamber Orchestra, the Prague Philharmonic, Italian Swiss Radio Orchestra, Norddeutsche Rundfunk, Filarmonia Hungarica and most of the major Spanish orchestras. Claudio Martínez-Mehner is an avid chamber music player and has performed with many ensembles in Europe and Asia. Presently he is piano professor at the Hochschule für Musik in Basel, Switzerland and at the Hochschule für Musik und Tanz in Cologne, Germany. He teaches masterclasses in Europe, Asia and the USA.