'Once' At Broadway Series Tuesday, April 14, 2015 | Sacramento, CA Listen / download audio Update RequiredTo play audio, update browser or Flash plugin. California Musical Theatre / Facebook 'Once the Musical' is opening Tuesday at the Broadway Series. In one of the roles is Maggie Hollinbeck, a familiar name and face to Sacramento audiences. We’ll talk with Hollinbeck and actor John Steven Gardner about what makes this musical so special. LINKS: California Musical Theatre Once The Musical