He was the Artistic Director and Principal Conductor of Armenian Philharmonic Orchestra from 1998 to 1999.
In 1985-1990 he also was a student of Professor Ilia Musin at St. Petersburg Conservatory.
Avetisyan was the conductor at the Armenian National Radio and Television Orchestra and the Orchestra of the National Academic Theatre of Opera and Ballet.
[2] Since 2002 Avetisyan was appointed conductor for the New Valley Symphony Orchestra.
Currently M. Avetisyan is the Artistic Director and Principal Conductor of the Glendale Philharmonic Orchestra (USA).