Yo-Yo Ma, Itzhak Perlman and two colleaguesの演奏で一般人が聞いた音は、2日前に録音されていたものだと、22日のNew York Timesにでていました。(以下引用) ”But what the millions on the Mall and watching on television heard was in fact a recording, made two days earlier by the quartet and matched tone for tone by the musicians playing along.” ”The conditions raised the possibility of broken piano strings, cracked instruments and wacky intonation minutes before the president’s swearing in (which had problems of its own). ”
さらに23日のには、QUOTATION OF THE DAY として、 "A broken string was not an option. It was wicked cold." YO-YO MA, on his play-along-with-the-music performance at the inauguration. というのがありました。