http://www.nytimes.com/2009/01/23/arts/music/23band.html?hpFrigid Fingers Were Live but the Music Wasnt
By DANIEL J. WAKIN
It was not precisely lip-synching, but pretty close.
The somber, elegiac tones before President Obamas oath of office at the inauguration on Tuesday came from the instruments of Yo-Yo Ma, Itzhak Perlman and two colleagues. 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.