Born to a farming family in Willow Hill, Franklin, Pennsylvania, McCurdy left home at 18 to pursue a singing career. He first found success in 1938 as a singer and disc jockey at a gospel radio station in Oklahoma. By the early 1940s, McCurdy had become a popular singer of romantic songs in nightclubs across North America, until vaudeville dancer Sally Rand caught his act, hired him to join her show, put him in a tuxedo and had him sing his romantic songs to her on stage while pushing her on her swing. He stayed in vaudeville for several years as a singer and straight man to comedian Jack E. Leonard, before moving in 1948, with his Canadian dancer wife and family, to Vancouver where he hosted his own radio show for CBC Radio. With the success of this show, the CBC transferred him to the flagship national station in Toronto where he starred in a morning children's show and an adult evening show. During his Canadian radio period, he developed friendships with the guests on his show, such as Pete Seeger, Lena Horne, Josh White, Oscar Peterson, and Oscar Brand. He developed a love for folk music and released his first folk album in 1949. After achieving success with his folk show at New York's Village Vanguard in 1950, McCurdy and his family moved to New York City, from where he went on to become one of the world's best-known folk singers. He also became the "L&M Cigarette Man" on television, was an emcee for the George Gobel Show, and by 1956, was star of the children's TV show Freddie The Fireman. He recorded many albums in the 1950s and 1960s for Elektra Records and Tradition Records, performed several times at the Newport Folk Festival, and was a well-known folk music artist throughout the 1950s and early 1960s, developing friendships with the younger folk set of Odetta, Bob Gibson, Erik Darling, Ramblin' Jack Elliott and Josh White, Jr. His widely covered anti-war song, "Last Night I Had the Strangest Dream", has been recorded in seventy-six languages, Hannes Wader in 1979. The melody is included in Francesco de Gregori's "Via della poverta". In November 1989, as Tom Brokaw stood on top of the Berlin Wall, he directed his NBC-TV cameras towards the school children on the East German side of the Berlin Wall, to show the children singing "Last Night I Had the Strangest Dream" en masse as the wall was being dismantled. His collection of risqué Elizabethan folk songs in a three-part series of albums titled When Dalliance was in Flower , became a favorite record series on college campuses. The actor Alan Arkin played with him on these recordings. His single "Miracle of the Wheat" released on Kapp Records in 1956 became a Christmas Tradition on Cincinnati Radio. By the late 1960s, McCurdy was forced to retire with health problems. In 1980, two of his compositions, "Last Night I Had the Strangest Dream" and "King's Highway", as recorded by his old friend Josh White, Jr., became the official theme songs for the Peace Corps and VISTA, respectively. In the mid 1980s, he and his wife Beryl moved to Nova Scotia, where he enjoyed a second career as a character actor on Canadian television. He was awarded the Peace Abbey Courage of Conscience award September 26, 1992 for "Last Night I Had the Strangest Dream".