Answer the question at the end by quoting:

The Nitty Gritty Dirt Band, an American country rock band, has existed in various forms since its founding in Long Beach, California in 1966. The group's membership has had at least a dozen changes over the years, including a period from 1976 to 1981 when the band performed and recorded as the Dirt Band. Constant members since the early times are singer-guitarist Jeff Hanna and drummer Jimmie Fadden. Multi-instrumentalist John McEuen was with the band from 1966 to 1986 and returned during 2001 departing once again in November 2017.
The Nitty Gritty Dirt Band was founded around 1966 in Long Beach, California by singer-guitarist Jeff Hanna and singer-songwriter guitarist Bruce Kunkel who had performed as the New Coast Two and later the Illegitimate Jug Band. Trying, in the words of the band's website, to "figure out how not to have to work for a living," Hanna and Kunkel joined informal jam sessions at McCabe's Guitar Shop in Long Beach. There they met a few other musicians: guitarist/washtub bassist Ralph Barr, guitarist-clarinetist Les Thompson, harmonicist and jug player Jimmie Fadden, and guitarist-vocalist Jackson Browne. As Nitty Gritty Dirt Band, the six men started as a jug band and adopted the burgeoning southern California folk rock musical style, playing in local clubs while wearing pinstripe suits and cowboy boots. Their first paying performance was at the Golden Bear in Huntington Beach, California.  Browne was in the band for only a few months before he left to concentrate on a solo career as a singer-songwriter. He was replaced by John McEuen on banjo, fiddle, mandolin, and steel guitar. McEuen's older brother, William, was the group's manager, and he helped the band get signed with Liberty Records, which released the group's debut album, The Nitty Gritty Dirt Band during 1967. The band's first single, "Buy for Me the Rain," was a Top 40 success, and the band gained exposure on The Tonight Show Starring Johnny Carson, as well as concerts with such disparate artists as Jack Benny and The Doors.  A second album, Ricochet, was released later during the year and was less successful than their first. Kunkel wanted the band to "go electric", and include more original material. Bruce left the group to form WordSalad and Of The People. He was replaced by multi-instrumentalist Chris Darrow.  By 1968, the band adopted electrical instruments anyway, and added drums. The first electric album, Rare Junk, was a commercial failure, as was their next, Alive.  The band continued to gain publicity, mainly as a novelty act, making an appearance in the 1968 film, For Singles Only, and a cameo appearance in the 1969 musical western film, Paint Your Wagon, performing "Hand Me Down That Can o' Beans". The band also played Carnegie Hall as an opening act for Bill Cosby and played in a jam session with Dizzy Gillespie.

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IN: Convy was born in St. Louis, Missouri, the son of Monica (nee Whalen) and Bernard Fleming Convy. Convy's family moved to Los Angeles when he was seven years old. He later attended North Hollywood High School where he was an all-around athlete. The Philadelphia Phillies offered him a contract when he was just 17 and he played two years of minor league baseball in 1951-52.

He turned to acting full-time in 1956 and was in the musical The Billy Barnes Revue in Los Angeles before moving to New York City. He appeared in 10 Broadway shows, including "Nowhere to Go but Up", Cabaret (originator of the role of Cliff, Sally Bowles' boyfriend), and The Impossible Years. He played the reporter Hildy Johnson in a 1969 Broadway revival of The Front Page, which starred Robert Ryan. In the original Broadway cast of Fiddler on the Roof with Zero Mostel, Convy played Perchik the Student and sang "Now I Have Everything".  In the 1960-1961 season, Convy guest starred on Pat O'Brien's short-lived sitcom Harrigan and Son as well as the series 77 Sunset Strip in the role of David. He was also cast on an episode of The Mary Tyler Moore Show as Mary's friend Jack Foster, alongside future Alice star Beth Howland. In 1973, Convy was a guest star in two episodes of Hawaii Five-O. Convy also guest starred in an episode of Perry Mason titled "The Case of the Nimble Nephew". He played Harry Thompson, the defendant.  In 1974, Convy portrayed Lt. Steve Ostrowski, the police officer nephew of elderly amateur sleuths on the short-lived series The Snoop Sisters.  Convy attempted a short-lived variety series called The Late Summer Early Fall Bert Convy Show in 1976. In 1979, he appeared with the Dallas Cowboys Cheerleaders in their eponymous television movie. Throughout his career, Convy was a frequent guest star on series such as Bewitched, Hawaii Five-O, The Partridge Family, Mission: Impossible, The Silent Force, The New Phil Silvers Show, Fantasy Island, Charlie's Angels and Murder, She Wrote (including the pilot episode). In 1983, Convy was cast as Neil Townsend on the sitcom It's Not Easy, playing opposite Ken Howard. Convy had joined the project when it was recast after its intended premiere in the 1982-83 season was delayed; he earned the role originally given to Larry Breeding, who was killed in a car accident in September 1982 after the first pilot was shot.  Convy also starred in several movies, perhaps most memorably Semi-Tough (1977), in which he played a caricature of Werner Erhard named Friedrich Bismark. Other film credits included A Bucket of Blood (1959), Susan Slade (1961), Philippe de Broca's Les Caprices de Marie (1970), SST: Death Flight (1977), the horror film Jennifer (1978), Hanging by a Thread (1979), Racquet (1979), The Man in the Santa Claus Suit (1979), Hero at Large (1980), The Cannonball Run (1981), and the television movie Help Wanted: Male (1982). Convy tried his hand at directing with the comedy Weekend Warriors (1986). In 1980, Convy produced and directed the Goodspeed Opera House premiere of the musical Zapata, with music and lyrics by Harry Nilsson and Perry Botkin, Jr., and libretto by Allan Katz.

Was he in any other musicals?

OUT:
He appeared in 10 Broadway shows, including "Nowhere to Go but Up", Cabaret (originator of the role of Cliff, Sally Bowles' boyfriend), and The Impossible Years.