Original: Ma was the first performer on September 11 , 2002 , at the site of the World Trade Center , while the first of the names of the dead were read in remembrance on the first anniversary of the attack on the WTC .
Simplified: A year after the attack on the World Trade Center , on 11 September , 2002 , he played his cello on the site of the building while the first of the names of the dead were read in remembrance .