AP Photo/Charlie Riedel
Fans watch Tom Petty & the Heartbreakers perform during halftime of Super Bowl XLII between the New England Patriots and the New York Giants at University of Phoenix Stadium on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Julie Jacobson
Tom Petty performs at halftime during Super Bowl XLII between the New York Giants and New England Patriots at University of Phoenix Stadium on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Chris O'Meara
Tom Petty & the Heartbreakers perform during halftime of Super Bowl XLII between the New England Patriots and the New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Julie Jacobson
Tom Petty performs at halftime during Super Bowl XLII between the New York Giants and New England Patriots at University of Phoenix Stadium on Sunday, Feb. 3, 2008. in Glendale, Ariz.
AP Photo/Chris O'Meara
Tom Petty & the Heartbreakers perform during halftime of Super Bowl XLII between the New England Patriots and New York Giants Sunday, Feb. 3, 2008, in Glendale, Ariz.
CBS
Tom Petty & the Heartbreakers perform during halftime of Super Bowl XLII between the New England Patriots and New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Stephan Savoia
Tom Petty performs with his band, Tom Petty and the Heartbreakers, during halftime of Super Bowl XLII between the New England Patriots and New York Giants at University of Phoenix Stadium on Sunday, Feb. 3, 2008, in Glendale, Ariz.
Jordin Sparks
AP Photo/David J. Phillip
Singer Jordin Sparks sings the national anthem before Super Bowl XLII between the New England Patriots and New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.
Alicia Keys
AP Photo/David J. Phillip
Singer Alicia Keys performs before the Super Bowl XLII football game between the New England Patriots and New York Giants at University of Phoenix Stadium on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Stephan Savoia
Singer Alicia Keys, front center, performs before Super Bowl XLII between the New England Patriots and the New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Matt Slocum
Singer Alicia Keys performs before Super Bowl XLII between the New England Patriots and the New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Charlie Riedel
Singer Alicia Keys performs before Super Bowl XLII between the New York Giants and the New England Patriots, Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Elaine Thompson
Singer Alicia Keys performs before Super Bowl XLII between the New England Patriots and the New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.
CBS
Singer Alicia Keys performs before Super Bowl XLII between the New England Patriots and the New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/Chris O'Meara
Singer Alicia Keys performs before Super Bowl XLII between the New England Patriots and New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.
AP Photo/David J. Phillip
Singer Alicia Keys performs before Super Bowl XLII between the New York Giants and the New England Patriots on Sunday, Feb. 3, 2008, in Glendale, Ariz.
CBS
Singer Alicia Keys performs before Super Bowl XLII between the New England Patriots and the New York Giants on Sunday, Feb. 3, 2008, in Glendale, Ariz.