According to the European Advertisement Agency, the tour's promoter, the ensemble did not receive visas in time to travel to the U.S.
"We are very disappointed to have to postpone our U.S. engagements," said the agency's Cezary Szyjko in a statement. "However, once these issues are resolved we look forward to bringing the Alexandrov Chrous to the United States."
A representative of Heinz Hall in Pittsburgh said she had not been aware of any visa problems, and said the group's planned performance there had suffered from slower-than-anticipated ticket sales. She added that she expected the group to schedule a new date in spring 2005.
Performances in Minneapolis, Washington, and Detroit were also affected.
The group, celebrating its 80th anniversary, was to perform a program of folk songs, liturgical music, and Soviet-era military songs. The tour would have been its first in the United States since 1989.