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2015 Kickoff Concert
Images from the 2015 Kickoff Concert featuring multi-platinum singer-songwriter Ellie Goulding and San Francisco's own Grammy Award-winning band Train.

Lead singer Patrick Monohan takes selfies with fans as Train perform for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)

Lead singer Patrick Monohan and Train perform for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)

Fans cheer as Train performs for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)

Train performs for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)

Lead singer Patrick Monohan and Train perform for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)

Ellie Goulding performs for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)

Ellie Goulding performs for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)

Ellie Goulding performs for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)

Ellie Goulding performs for the NFL Kick-Off to 50 event, Wednesday, September 10, 2015 in San Francisco. (Doug Benc/AP Images for NFL)