Mason co-produced the Vina Del Mar Festival beginning in 1979 for 10 years.
In 1989, he produced the hit song "El Meneaito", and directed the music video.
Since then, he has produced and directed dozens of music videos, which have been seen by millions of people worldwide.
Some of the artists that Mason has toured, promoted and/or produced include Donna Summer, Ray Conniff, War, Peter Frampton, Jose Feliciano, Matt Monro, Shirley Bassey, Air Supply, Anita Ward, Sister Sledge, Jerry Lewis, Paul Michael Glaser, David Soul, Roberta Flack, Maurice Jarre, Krokus, Nazareth, Gaby, Jam & Suppose, Renato, Gloria Gaynor, Modern Talking, Los Diablos, Santana, Kathy, and Reggae Sam.
The Grammy winning album was for Best Latin Pop Performance – Jose Feliciano – Me Enamore.