Auditions for ” Fiddler on the Roof” will be 7-10 p.m. Dec. 11 and 12 in Hauck Auditorium, Memorial Union, the University of Maine in Orono. Auditioners need a prepared vocal rendition from the musical and will audition as singers and actors. Rehearsals begin Jan. 13; performances will be the first week in April. The cast is more than 30 and all parts are open.