Broadway icons Jerry Orbach and Maureen McGovern gloriously step into a wash of bright footlights onstage in CBS’s 1988 musical special, “Irving Berlin’s 100th Birthday Celebration”. The pair launch into a seamless medley that threads together “A Pretty Girl Is Like a Melody” (1919) and “Easter Parade” (1933), with Orbach—joined by ornately dressed statuesque models—fittingly supplying the opening vocals and McGovern’s crystalline voice fluttering over the lighthearted chorus of “Easter Parade”