Alexandra Null and Hayden Smiley will perform lead roles as the “Singing Sisters,” Judy and Betty Haynes, during Altus High School’s all-school production of Irving Berlin’s White Christmas. Curtains will open on-stage at the Eula B. Peterson Auditorium at 7 p.m. on Monday and Tuesday evenings, Nov. 23 and 24. Tickets are selling quickly, but may still be purchased through Friday in the auditorium lobby, from 11 a.m. to 1 p.m. each day, or until sold out. If any tickets remain, they will be available at the door on performance nights. Reserved seats are $6 and balcony seats are $4. For more information, call 481-2663.