PHOENIX - JANUARY 31: Singer Alicia Keys announces the 'Alicia Keys I Am Tour' and will perform the pregame show at Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: (L-R) Singer Alicia Keys will sing the pregame show and singer Jordin Sparks will sing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: (L-R) Singer Alicia Keys will sing the pregame show and singer Jordin Sparks will sing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: (L-R) Singer Alicia Keys will sing the pregame show and singer Jordin Sparks will sing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: (L-R) Singer Alicia Keys will sing the pregame show and singer Jordin Sparks will sing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: (L-R) Singer Alicia Keys will sing the pregame show and singer Jordin Sparks will sing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: (L-R) Singer Alicia Keys will sing the pregame show and singer Jordin Sparks will sing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: Singer Alicia Keys announces the 'Alicia Keys I Am Tour' and will perform the pregame show at Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: (L-R) Singer Alicia Keys will sing the pregame show and singer Jordin Sparks will sing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: (L-R) Singer Alicia Keys will sing the pregame show and singer Jordin Sparks will sing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Streeter Lecka/Getty Images)

PHOENIX - JANUARY 31: Singer Jordin Sparks poses before her news conference regarding singing the national anthem prior to Super Bowl XLII at the Phoenix Convention Center on January 31, 2008 in Phoenix, Arizona. (Photo by Frank Micelotta/Getty Images)

Singer Alicia Keys, who will sing the pregame show, and singer Jordin Sparks, who will sing the national anthem prior to Super Bowl XLII, give a press conference at the Super Bowl XLII Radio Row in Phoenix, Arizona on January 31, 2008. (Photo by Ben Liebenberg/NFL.com)