NSync took to the stage in Washington

So far only a rough total is available as organisers say the take from sponsorships, online contributions and auctions, telephone pledges and sales of merchandise have to be added.

On Saturday, Sir Paul McCartney led an array of rock's biggest names in a charity show at New York's Madison Square Garden, which raised $14m (�9m) in ticket sales.

Sir Paul had said he "had to do something" following 11 September.

The show charged up to $2,000 (�1,400) per ticket for 14,000 seats.

Support

The remaining 5,000 tickets were given free to the city's police officers, fire-fighters and rescue workers.

The line-up for the New York gig included Mick Jagger, David Bowie, Billy Joel, Destiny's Child, James Taylor and Jon Bon Jovi, while other bands, including Irish rock group U2, sent recorded messages of support.

The United We Stand concert in Washington, where the Pentagon was attacked, raised about $3m (�2.1m) in ticket sales.

Michael Jackson organised the Washington gig

Michael Jackson, Mariah Carey, P Diddy, Aerosmith, Bette Midler, Destiny's Child and 'N Sync were among the stars who took part.

Meanwhile in Nashville, country music stars Tim McGraw, Lee Ann Womack, Hank Williams Jr and Trisha Yearwood were among those who played in another benefit show on Sunday.

Nashville proceeds will go to the Salvation Army and for financial help for families affected by the 11 September attacks.

Ticket sales figures are as yet unavailable for the Nashville concert, but prices ranged from $25 (�17.50) to $1,000 (�703).