sentences:  But during the 1980s and 1990s many musicians, plagued by financial hardship, left the country to pursue opportunities elsewhere.Although its home theater was burned by looters during the April 2003 invasion of Baghdad, the orchestra performed a concert in Baghdad in June 2003 and subsequently traveled through northern Iraq, recruiting new members.In December 2003, the orchestra performed a joint concert with the U.S. National Symphony Orchestra and Yo-Yo Ma at the Kennedy Center in Washington, co-sponsored by the U.S. State Department.