Composer and former bassist and singer of British rock band Pink Floyd  Roger Waters, is seen while touring Israel's separation barrier in the West Bank refugee camp of Aida in Bethlehem, Tuesday, June 2, 2009. In an interview with The Associated Press, Waters denounced the wall as a land grab by Israel, said it must come down and promised to hold a concert on that spot if it does. The 65-year-old co-wrote Pink Floyd's iconic "The Wall" album and performed music from it in 1990 at the site where the Berlin Wall once stood. AP Photo logo AP Photo 6 months ago

Composer and former bassist and singer of British rock band Pink Floyd Roger Waters, is seen while touring Israel's separation barrier in the West Bank refugee camp of Aida in Bethlehem, Tuesday, June 2, 2009. In an interview with The Associated Press, Waters denounced the wall as a land grab by Israel, said it must come down and promised to hold a concert on that spot if it does. The 65-year-old co-wrote Pink Floyd's iconic "The Wall" album and performed music from it in 1990 at the site where the Berlin Wall once stood.