Singer-songwriter Sarah McLachlan will perform at a dedication ceremony for the 9/11 memorial for Flight 93 in western Pennsylvania.

The National Park Foundation said Monday McLachlan will sing at the Sept. 10 event near Shanksville, where the 40 passengers and crew aboard United Flight 93 died Sept. 11, 2001. The plane crashed in a field after passengers tried to overtake the hijackers.

The Flight 93 National Memorial dedication will include dignitaries and relatives of those killed.

One of the memorial's features is the "Tower of Voices" which will house 40 wind chimes representing the passengers and crew. Most of the estimated $60 million needed for the first phase of the entire memorial's design has been raised.

Grammy Award-winning McLachlan's songs include "Building a Mystery" and "I Will Remember You."