

The key people who helped the trio get going were musical arranger Milton Okun and star performer/singer Harry Belafonte. Beaver, who invited the three to travel with him to New York City in the summer of 1959 and to try performing in the burgeoning folk-music scene.

They were encouraged by Spokane Catholic priest Reinard W. The original group was formed in 1958, by William Chadbourne "Chad" Mitchell (from Portland, Oregon, born December 5, 1936), Mike Kobluk (from Trail, British Columbia, Canada, born December 10, 1937), and Mike Pugh (from Pasco, Washington) when they were students and glee club members at Gonzaga University in Spokane, Washington, United States. They were particularly notable for performing satirical songs that criticized current events during the time of the Cold War, the civil rights movement, and the Vietnam War.

They performed traditional folk songs and some of John Denver's early compositions. The Chad Mitchell Trio, later known as The Mitchell Trio, were an American vocal group who became known during the 1960s.
