The Ohio State Fair has opened the curtain on this year's butter sculptures. The display for this year's edition of the fair celebrates the 50th anniversary of the All-Ohio Youth Choir and pays tribute to its founder, Glenville D. Davis. The traditional butter cow and calf share a larger refrigerated display with a butter bust of Davis and 60 choir members. It was made public on Tuesday by the American Dairy Association, a day before the fair's opening ceremony. The sculptures include about 2,000 pounds of butter and took 543 hours to complete. This year's All-Ohio State Fair Youth Choir has 200 members and will perform several times every day of the fair, which runs Wednesday through Aug. 4.