Thomas Groppel, director of ceremonies of the Armed Forces Inaugural Committee, was in charge of coordinating 5,000 military ceremonial troops at the Presidential Inauguration. But he also made sure the Steinway played by Gabriela Montero for John William’s Air and Simple Gifts had a heater on it. “A grand piano in 25- to 30-degree weather doesn’t sound like Steinway would like it to sound. That’s not acceptable for us.”