Sound Artist Stephen Vitiello captured the sounds of New York City from the 91st floor of one of the World Trade Center towers in 1999 - just two years before the September 11th attacks that would bring the towers down. For the twelfth anniversary of that day we reflect back on his work and the unique experience it captures.

You can listen to the sounds recorded and the thoughts of Vitiello at the following link: http://www.studio360.org/2011/sep/02/the-sounds-of-the-world-trade-center/