From Tchaikovsky's nostalgic homoage to Mozart to the Fourth Symphony of Brahms, who tackles 30 variations in his fanale to Miguel Del Aguila's sensual Conga, a rhythmic feast that pastes the outer limits of its range and structure, the varied sounds and colors of the Ann Arbor Symphony Orchestra shines in these diverse pieces. Bid on this certificate for two tickets to Variations on Saturday March 11 at 8 p.m. Start your night out with dinner for two at Sweet Lorraine's, an American style bistro. Tickets include invitation to dress rehearsal on March 10 or March 11.