The Cleveland Plain Dealer reported that all seemed to be going well when suddenly things fell apart and Welser-M‹st said, "Sorry." He directed the ensemble to begin a few bars back, but the performance derailed a second time.

"You see how difficult this is," Welser-M‹st said to the audience. "It worked this morning."

Meanwhile, in Detroit, Yefim Bronfman stopped the show while performing Rachmaninoff's Piano Concerto No. 3 with the Detroit Symphony Orchestra. Towards the end of the first movement, according to The Detroit News, Bronfman stopped playing and called out to conductor Peter Oundjian that a D-natural on the keyboard's upper register wasn't working.

While the house piano technician wrangled with the keyboard, Oundjian and Bronfman joked on stage: "I don't see what the big deal is. The D is missing and the concerto happens to be in D minor," said Oundjian. "Right now," replied Bronfman, "I wish I played violin."

After more banter, the technician finished the job and restored the D key and Bronfman resumed the movement's solo cadenza as if nothing had happened, according to the News.