 Acts such as the Minneapolis Symphony Orchestra and Louis Armstrong played the Corral, although the arena's poor acoustics were a frequent concern to organizers and patrons.Improvements were made to the grandstand and the race track was rebuilt in 1954.The Big Four Building, named in honour of the Stampede's benefactors, opened in 1959 to serve as the city's largest exhibition hall in the summer, and was converted into a 24-sheet curling facility each winter.