Kid Rock performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans SaintsThursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Kid Rock performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Maroon 5 lead singer Adam Levine performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans SaintsThursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Maroon 5 performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans SaintsThursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Kid Rock performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans SaintsThursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Kid Rock performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans SaintsThursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Maroon 5 lead singer Adam Levine performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Maroon 5 lead singer Adam Levine performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Maroon 5 lead singer Adam Levine performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Fans watch as Kid Rock performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Kid Rock performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Kid Rock performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Mike Roemer)

Maroon 5 lead singer Adam Levine performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Jim Prisching)

Fans cheer as Kid Rock performs during a kickoff concert before an NFL football game between the Green Bay Packers and the New Orleans Saints Thursday, Sept. 8, 2011, in Green Bay, Wis. (AP Photo/Jim Prisching)