The Roots play Parkway July 4, help announce other artists today

Third time is a charm. The Roots will again perform at the annual July 4 Wawa Welcome America! festival on the Parkway.

Mayor Nutter and city and festival representatives will announce the musical guests this morning at 10:30 at City Hall and we're told Roots leaders Ahmir "?uestlove" Thompson and Tariq "Black Thought" Trotter will attend the announcement to reveal who will perform with the "Late Night with Jimmy Fallon" show band at the show.

The festival will also include a concert with Aaron Neville and Gerald Veasley at Penn's Landing, among its several days of programming.

The Roots performed the past two years on July 4, first opening for Sheryl Crow, then for the Goo Goo Dolls. If you can't wait until July 4, the group will again host the Roots Picnic, on June 4 at the Festival Pier at Penn's Landing. The ticketed concert features more than a dozen acts including Nas, Wiz Khalifa, Man Man, the Dismemberment Plan, and Esperanza Spalding, who became an enemy of Justin Bieber fans after being honored as best new artist at the Grammy Awards. Tickets are on sale now.

Read more from our column in Tuesday's Daily News.

UPDATE: Mayor Nutter announced at City Hall Tuesday morning that Earth, Wind and Fire, Michael McDonald, Estelle, Sara Bareilles, DJ Jazzy Jeff will join The Roots and that part of the concert includes a tribute to the 40th anniversary of hitmakers Kenny Gamble and Leon Huff's Philadelphia International Records label and its "Sound of Philadelphia.”