Walker then began the pursuit of an acting career In 1966. He began studying voice and vocal reproduction from Brook Alexander and at the end of that year joined Voices, Inc. He remained narrator, lead singer, and artistic director of this organization until
The Believers was produced in 1968. The Believers was co-authored by Walker and Josephine Jackson. From 1969 to 1975, he taught at
CCNY's Leonard Davis Center of Performing Arts as an associate professor in the speech and theatre department. Also in 1969 he met Moses Gunn, who introduced him to
Douglas Turner Ward, the artistic director of
The Negro Ensemble Company (NEC), which led to the production of
The Harangues, opening the 1969–70 season.
Ododo, which Walker wrote, directed, and co-choreographed, opened with mixed reviews in the 1970–71 season at NE. The music for "Ododo" was composed and directed by his second wife Dorothy Ann Dinroe-Walker, also a
Howard University graduate. Walker married Dorothy A. Dinroe in 1970, a match made in their love for the arts. Wanting to create his own theatre company, Walker became the artistic director of the Demi-Gods. The Demi-Gods was co-founded with his wife Dinroe-Walker between 1970 and 1974. In 1971–72, Walker and Dinroe-Walker co-produced
Yin-Yang at the African American Studio. In 1972–73, Douglas Turner Ward went into production for
The River Niger. The response to
The River Niger was so overwhelming that the play was moved to the
Brooks Atkinson Theatre on Broadway in 1973, where it won the Tony Award in 1974. In this same year his first daughter, Kumina Walker, was born. Walker received 400 hours towards a Motion Picture Production Certificate received at the
Germaine School of Photography, New York City, in 1973. He also completed 28 credits towards his Ph.D. in cinema studies at
New York University and was honored as playwright-in-residence at
Yale School of Drama. ==Later life==