The choral rock band out of Dallas, Texas, has been thrilling audiences with its live performances for over a decade.
Despite U.S. and Israeli opposition, the United Nations is expected Thursday afternoon to pass a Palestinian bid recognizing a Palestinian state, and give it non-member observer status at the U.N.
Currently, the only state with that status is the Holy See (Vatican).
The move could open the way for Palestinians to bring war crimes charges against Israel at the International Criminal Court.
The U.S. and Israel say it will complicate efforts to achieve an independent Palestinian state through peace talks.