La música en el concierto inaugural de Obama no era en vivo

En Reuters explican la razón: el frío extremo pudo ocasionar que se rompan las cuerdas de los instrumentos.

Obama music: Live or taped?
Jan. 23 - The classical performance heard by millions at the presidential inaugural ceremony was taped, not live. The bows of the musicians actually tickled the strings, but their music was not amplified. Fred Katayama reports.