The Concert in Central Park would pass before Simon & Garfunkel worked together again. Their next joint public appearance was in 1990, when they performed for their induction into the Rock and Roll Hall of Fame. When Simon gave another free concert in Central Park on August 15, 1991, he rejected Garfunkel's offer to participate. However, they agreed to perform together in 1993 for 21 sold out concerts in New York, with half of the show being Paul Simon solo with a band and the other half Simon and Garfunkel. Later the same year, they did some charity concerts, including the Bridge School Benefit concerts
The September Concert small army of volunteers, and on September 11th 2002 the first September Concert was born. To date this organization has functioned solely through the efforts of volunteers. In addition to the Board of Directors that included artists Jacques d'Amboise and Robert Rauschenberg, The September Concert Foundation's Advisory Board was set up in 2002 with entertainers such as Quincy Jones, Ravi Shankar and Christy Turlington Burns. Business leaders such as Tom Freston also joined in to help the foundation. In 2010, 200 concerts were held all over the world on or near September 11. In New York City 58 concerts were