Since then, Aussel's renown as an international concert artist has continued to spread, and he appears regularly in Europe, South America and especially since 1990, the United States (Boston, Los Angeles, San Fransisco, Dallas, New York).

Presently, Aussel teaches at the Musikhochschule of Köln (Germany) and manages brilliantly to combine this demanding task with an active world-wide career every year.

His repertoire ranges from the Baroque to contemporary music and includes folk and popular pieces from the various Latin American countries.

Keenly interested in 20th century music, he has collaborated with several composers, many of whom have written for him:  Marius Constant, Marlos Nobre, François Rossé, Norbert Leclerc, José Luis Campana, Francis Schwartz, Juan María Solare, Francis Kleynjans, Bob Wander, Carlos Grätzer, Edmundo Vasquez, Pascale Jakubowski.