Roy Clark, country music manager Jim Halsey and rockabilly pioneer Wanda Jackson were among those scheduled to join the Oklahoma Music Hall of Fame Tuesday night (Oct. 24). The fourth annual concert and induction ceremony was to take place at the Muskogee Civic Center in Muskogee, Okla. Clark, the Country Music Association's Entertainer of the Year in 1973 and a longtime Hee Haw star, got his first national break as opening act for Jackson during a four-week run in Las Vegas in 1960. Halsey was managing Jackson at the time he met Clark and became his manager. Halsey convinced Clark to relocate from the Washington, D.C., area to Tulsa and the two formed a professional relationship that lasted more than 30 years. Early jazz group the Oklahoma City Blue Devils and pop group Color Me Badd also were to join the Hall of Fame during the ceremony.