In New York City, two more concerts have been announced. A Radio City Music Hall show will take place on September 20, simultaneously with the previously-announced event at Madison Square Garden. The Radio City concert will feature Dave Matthews, Tom Waits, Joss Stone, Trey Anastasio, the John Mayer Trio, Galactic and Ray Lamontagne. More artists have been added to the MSG show as well, with Simon & Garfunkel, Elvis Costello and Diana Krall among those playing.

In Philadelphia, local stars The Roots and Jill Scott will headline a charity show on Friday, September 16. Rolling Stone reports that proceeds will go to the NAACP's hurricane relief efforts.