Comparison Between Piano Concert by Barbara Wieman and Sacramento Chamber Orchestra On Feb 20,1997, I attended a piano concert that was performed by Barbara Wieman. The performance was held at the American River College Music Department choir room. The choir room holds about 100 people and every seat was taken and students were seated on the floor. The audience was dressed casual as everyone was students trying to do their concert papers. Barbara Weiman was also dressed casual but nice. The piano concert started at 12:20pm and was finished at 1:05pm