In 1937 Beaudet joined the staff of the Canadian Broadcasting Corporation where he held a variety of posts through 1947, including program director for the Quebec region, national music supervisor, and program director for the French network. He played an influential role in making music the primary focus of CBC programing, as opposed to news, drama, and talk radio. The CBC commissioned its first two operas, both by Healey Willan, as a result of his leadership: and Deirdre. Beaudet also conducted numerous broadcasts for CBC Radio between 1936-1946, including performances of Hector Berlioz's L'enfance du Christ, Gabriel Fauré's Requiem, and Arthur Honegger's Le roi David among other important works. He also conducted 8 programs of music by Canadian composers for the NBC Radio series Music of the New Worldin the summer of 1944 for a collaborative project with the CBC. He left the staff of the CBC in 1947, but later worked for the organization again in 1948-1949 as director of the Radio Canada International program Music and Musicians of Canada. While working for the CBC in the 1940s, Beaudet was also active as a guest conductor and pianist. He led performances of Georges Bizet'sCarmen with singers from the Metropolitan Opera in 1943 at the St Denis Theatre. On 13 May 1946 he conducted his first European concert, a program of Canadian works, with the Czech Philharmonic Orchestra at the Prague Spring Festival. That same year he had a great personal triumph performing a recital of piano works by Claude Debussy at the Ermitage.
Later career
After leaving the staff of the CBC, Beaudet joined the music faculties of both the Conservatoire de musique du Québec à Montréal and the École de musique Vincent-d'Indy in 1947. He taught at both institutions for the next five years, and notably conducted the orchestra at the CMM. He included among his students Jocelyne Binet and Josephte Dufresne. He was also active as an accompanist throughout Canada during those years, playing in recitals given by Raoul Jobin, Marjorie Lawrence, Ezio Pinza, Georges Thill, and Ninon Vallin among others. He also appeared as one half of a piano duo with partner Jeanne Landry. In 1949 Beaudet conducted performances of Giacomo Puccini's Tosca at the Montreal Festivals, and led performances of Darius Milhaud's Le pauvre matelot for the Minute Opera. That same year he also conducted Bizet's incidental music for a production of Alphonse Daudet's play L'Arlésienne in St-Laurent, Quebec. In 1951 he was engaged by the CBC to conduct performances of Charles Gounod's Faust and broadcasts with the Montreal Symphony Orchestra, the Quebec Symphony Orchestra, the Vancouver Symphony Orchestra, and the Winnipeg Symphony Orchestra. In 1952-1953 Beaudet went on sabbatical to Paris through a grant awarded to him by the Royal Society of Canada. Upon his return to Montreal in October 1953, he led 16 performances of Puccini's Madama Butterfly at the Variétés lyriques. Later that year he assumed the post of director of production and program planning at CBC Radio in Toronto. He remained in that position through 1957, during which time he conducted for numerous radio and television broadcasts. He was particularly active as an opera conductor at the CBC. He also frequently conducted the CBC Symphony Orchestra from 1953-1964. From 1957-1959 he served as CBC's representative in Paris. Beaudet was the executive secretary of the Canadian Music Centre from 1959-1961, after which he worked for the last time at the CBC as the assistant vice-president in charge of programming from 1961-1964. He was appointed the first music director for the National Arts Centre in 1964, where he remained until his death a seven years later. He notably was responsible for assembling the National Arts Centre Orchestra at its founding.
