An opus is, say, a thick Leo Tolstoy novel that sits unread on your shelf. But capital-O Opus is Allied Arts’ big biennial fundraiser, and the latest happens from 7:30 to 11:30 p.m. Friday at Oklahoma City Golf & Country Club, 7000 N.W. Grand. Enjoy a gourmet buffet, a live auction and music by The Pink Flamingos. Tickets are $200. Call 278-8944 or visit alliedartsokc.com.