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2014 Kickoff concert
Take a look at the best photos from the 2014 NFL Kickoff concert.

Pop singer Pharrell Williams performs at a concert outside CenturyLink Field before an NFL football game between the Seattle Seahawks and the Green Bay Packers, Thursday, Sept. 4, 2014, in Seattle. (AP Photo/Scott Eklund)

Pop singer Pharrell Williams, center, performs at a concert outside CenturyLink Field before an NFL football game between the Seattle Seahawks and the Green Bay Packers, Thursday, Sept. 4, 2014, in Seattle. (AP Photo/Scott Eklund)

The band Soundgarden performs at a concert outside CenturyLink Field before an NFL football game between the Seattle Seahawks and the Green Bay Packers, Thursday, Sept. 4, 2014, in Seattle. (AP Photo/Scott Eklund)

Pop singer Pharrell Williams performs at a concert outside CenturyLink Field before an NFL football game between the Seattle Seahawks and the Green Bay Packers, Thursday, Sept. 4, 2014, in Seattle. (AP Photo/Scott Eklund)

Pop singer Pharrell Williams performs at a concert outside CenturyLink Field before an NFL football game between the Seattle Seahawks and the Green Bay Packers, Thursday, Sept. 4, 2014, in Seattle. (AP Photo/Scott Eklund)

Sep 4, 2014; Seattle, WA, USA; Recording artist and entertainer Pharrell Williams performs at the 2014 NFL Kickoff Concert at CenturyLink Field. (Kirby Lee/USA TODAY Sports)

Sep 4, 2014; Seattle, WA, USA; Recording artist and entertainer Pharrell Williams performs at the 2014 NFL Kickoff Concert at CenturyLink Field. (Kirby Lee/USA TODAY Sports)

Sep 4, 2014; Seattle, WA, USA; Recording artist and entertainer Pharrell Williams performs at the 2014 NFL Kickoff Concert at CenturyLink Field. (Kirby Lee/USA TODAY Sports)

Sep 4, 2014; Seattle, WA, USA; Recording artist and entertainer Pharrell Williams performs at the 2014 NFL Kickoff Concert at CenturyLink Field. (Kirby Lee/USA TODAY Sports)

Sep 4, 2014; Seattle, WA, USA; Soundgarden drummer Matt Cameron performs at the 2014 NFL Kickoff Concert at CenturyLink Field. (Kirby Lee/USA TODAY Sports)

Sep 4, 2014; Seattle, WA, USA; Recording artist and entertainer Soundgarden lead vocalist Chris Cornell and lead guitarist Kim Thayil and drummer Matt Cameron and bassist Ben Shepherd perform at the 2014 NFL Kickoff Concert at CenturyLink Field. (Kirby Lee/USA TODAY Sports)