Ohio Northern University’s Department of Music presents a holiday concert each year, but it is always advertised as the “it’s not quite Christmas yet” celebration. “Gaudete: The It’s Not Quite Christmas Yet” will prepare the ONU and Ada communities for the approaching holiday season with festive musical numbers presented by the ONU Wind and Symphony orchestras in the Freed Center for the Performing Arts at 7:30 p.m. on Dec. 10.