Yo-Yo Ma remains immune to the solemnity and the protocol that surround the world’s dignitaries. For him, the communing experience is the same as when he performed November 11 under the French Arc de Triomphe in Paris, alone in front of 70 powerful leaders. Or when he played later on Mumbai’s bay front like a street artist in front of passers-by who did not even recognize him as a cellist prodigy.