DON CHASTAIN (Lee Collins). Broadway: No Strings, Richard Rodgers; Superman, Hal Prince; Dance a Little Closer, Alan Jay Lerner; 42nd Street, starring as Julian. National tours: Coco, with Katharine Hepburn; Applause, opposite Lauren Bacall. Off-Broadway: Bat Mastersons Last Regular Job, Resistance, Writers Theater; Mrs. Farmers Daughter, Tom OHorgan. Most recent: The Ballad of Little Jo, Hal Prince/Directors Company. TV: co-star of Debbie Reynolds series. Emmy nomination, "Gunsmoke." Most recent: "City Kids," ABC/Henson; "Cosby Mysteries." Also, Best Screenplay Award, Paris Film Festival, The Mafu Cage; Headwriter, "Search for Tomorrow"; Scriptwriter, "As the World Turns." Monterey Jazz Festival singing with Jon Hendricks, club/concerts here and Europe. Current recordings: George and Ira Gershwins Strike Up the Band, Elektra Nonesuch.