On today’s date in 1980, “Satyagraha,” an opera by the American composer Philip Glass had its premiere in Rotterdam by the Netherlands Opera.

Four years earlier, Glass’s first opera, “Einstein on the Beach,” had scored a big hit not only in Avignon, France, where it had premiered, but also at a special, non-subscription performance at New York’s Metropolitan Opera.

But “Einstein” had been written for Glass’s own electronic keyboard ensemble, while the new opera “Satyagraha” was written for the more traditional opera pit orchestra of strings, winds, and brass – in some ways, a new language for Glass to learn.

And speaking of new languages, for opera singers used to singing in Italian, French or German, the libretto for “Satyagraha,” crafted by Glass and Constance DeJong was to be sung in ancient Sanskrit, based on texts from the Bhagavad Gita.

"Satyagraha" is a Sanskrit word meaning "truth force." While the text is ancient, the story of the opera is set in modern times and deals with Mahatma Gandhi's early years in South Africa and his development of non-violent protest as a political tool.

“Satyagraha” is the second in Glass’s opera trilogy about men who changed the world: Einstein, Gandhi, and the ancient Egyptian pharaoh Akhnaten.

Philip Glass (b. 1937): Satyagraha (New York City Opera; Christopher Keene, cond.) Sony 39672