SACRAMENTO, Calif.—Every pianist knows how important accuracy is in the arts. With Shen Yun Performing Arts, the accuracy of the dancers impressed Steven Thompson, a classical pianist. “I can say that the incredible accuracy, every hand position, every arm position was so accurate among all of them. I don’t even know how they could do that,” said Mr. Thompson. “Very emotional, and extremely accurate. I feel like modern ballet, European style ballet could learn a lot from them,” he added. Shen Yun is based in New York, and although they are known for their synchronicity and technical mastery, the spiritual side of the performance has also touched many. “You’ve really felt that compassion. And the feeling that came out, it really was kind of hard to keep it together, but I did. It was really amazing,” Mr. Thompson said. He also shared that seeing Shen Yun has helped him to …