A graduate of the University of Montréal majoring in music, he furthered his education in the United States and France. His teachers have been carillonists of international repute, such as the Montrealer Andrea McCrady (presently titular carillonist at the Canadian Parliament's Peace Tower in Ottawa), Jacques Lannoy in France and Milford Myhre in the United States.
In 1986, he recorded a collection of popular Québec Christmas airs on the Oratory's carillon along with the shrine's adult choir. (SNE-531). In 1993, he recorded a collection of sacred and secular music. This disc is still available in the Oratory Gift Shop. During his professional career, he has taken part in international carillon festivals in the United States in Springfield, Illinois, and in Lake Wales, Florida. He also gave a series of recitals marking the 125th anniversary of Canada, at the Peace Tower in Ottawa. Also, he has concertized in France, in Portugal, and on many carillons in the United States such as the University of California at Berkeley during the Convention of the Guild of Carillonneurs of North America in 1998.
He has composed many original pieces for the carillon as well as for voices. He is a member of the Guild of Carillonneurs of North America.
Claude Aubin officially retired on October 1, 2009. However he shall continue to play on Sunday at noon and at 2:30 PM. He will stay on even after the appointment of the shrine's new titular carillonist, Andrée-Anne Doane with whom on occasion he will offer recitals and participate in special projects. This will be something to see…er…hear!