Pop pianists Billy Joel and Elton John's 2003 tandem tour continues to grow.

Pop pianists Billy Joel and Elton John's 2003 tandem tour continues to grow. The pair has already scheduled 21 shows, with April appearances in Milwaukee, Cleveland, and St. Paul, Minn., and a second night in Rosemont, Ill., being the latest additions to the itinerary, which kicks off Feb. 21 in Birmingham, Ala.

In 2002, Joel and John were again among the top performers of the year, grossing $66 million over 34 U.S. arena dates. Born as a stadium tour of Australia, Japan, and North America in 1994, the trek has been regularly reprised ever since.

John has a few shows scheduled prior to the tour, starting with a Feb. 3 gig in Paris, and a Feb. 5 engagement at London's Old Vic Theatre. The latter is a fund-raiser for the historic venue that will see John joined in song by actor Kevin Spacey. John is chairman of the Old Vic Theatre Trust, while Spacey is a member of the board. John will also perform a pair of shows Feb. 18-19 at the 2,500-seat Tabernacle in Atlanta to benefit the Elton John Aids Foundation.

John's "Original Sin," from his Rocket/Universal album "Songs From the West Coast," is nominated for a best male pop vocal performance Grammy. Released in October 2001, the set debuted at No. 15 on The Billboard 200.

Here are John and Joel's tour dates:

Feb. 21: Birmingham, Ala. (Birmingham Jefferson Arena)
Feb. 24: Houston (Compaq Center)
Feb. 26: San Antonio, Texas (SBC Center)
Feb. 28: Dallas (American Airlines Center)
March 2: Oklahoma City, Okla. (Ford Center)
March 4: Indianapolis (Conseco Fieldhouse)
March 7: Pittsburgh (Mellon Arena)
March 9: Buffalo, N.Y. (HSBC Arena)
March 12: Lexington, Ky. (Rupp Arena)
March 14: Columbia, S.C. (Carolina Center)
March 16: Raleigh, N.C. (RBC Center)
March 28-29: Las Vegas (MGM Grand Garden Arena)
April 8: Milwaukee (Bradley Center)
April 10, 12: Rosemont, Ill. (Allstate Arena)
April 15: Cleveland (Gund Arena)
April 17: St. Paul, Minn. (Xcel Energy Center)
April 19: Fargo, N.D. (Fargodome)
April 24: Albany, N.Y. (Pepsi Arena)
May 2: Auburn Hills, Mich. (Palace of Auburn Hills)