After dropping out of college and stints as a butcher and forest ranger, among other occupations, Roberts made it to New York and began establishing himself on the stage in the mid- to late '50s. He got to Hollywood in 1958 with a key role in the movie #Desire Under the Elms and was cast in #Bonanza the following year. Though he was never known as a singer, Roberts participated in albums of folk and Western songs as an adjunct of #Bonanza, cutting a trio of songs (In the Pines, Early One Morning, Abilene) on the Bonanza album. The accompaniment on that album included Joe Maphis, Billy Strange, and Earl Palmer.
In 1963, Roberts recorded a folk album entitled Come All Ye Fair and Tender Ladies for RCA-Victor (the recording arm of NBC, which produced #Bonanza) that gave him a chance to use his gentle baritone to excellent effect on songs such as Shady Grove, They Call the Wind Mariah, and the Leadbelly standard Sylvie. The album was not a big seller, but it has held up better than most of the rest of the recordings issued in association with the series. (Lorne Greene had the biggest success of all the #Bonanza cast, with the number one single Ringo in early 1964 and a brace of albums to his credit).
After leaving the series, Roberts' music activities were confined to dinner theater performances of +Camelot and other plays that require a rich baritone. He also did appearances in dramatic and comedic roles on series such as #The Name of the Game and #The Odd Couple, and later starred in the series #Trapper John, M.D. for seven years in the 1980s. ~ Bruce Eder, Rovi