Guitarist and vocalist Myles Kennedy of American hard rock group Alter Bridge performing live on stage at Wembley Arena, on October 18, 2013.

Bassist Brian Marshall (L) and guitarist Mark Tremonti of American hard rock group Alter Bridge performing live on stage at Wembley Arena, on October 18, 2013.

Frontman Brent Smith of American hard rock group Shinedown performing live on stage at Wembley Arena, on October 18, 2013.

Brian Marshall, Myles Kennedy and Mark Tremonti of American rock group Alter Bridge performing live on stage at Wembley Arena in London, on October 18, 2013.

Vocalist and guitarist Myles Kennedy of American rock group Alter Bridge performing live on stage at Wembley Arena in London, on October 18, 2013.

Guitarist Mark Tremonti (R) and bassist Brian Marshall of American rock group Alter Bridge performing live on stage at Wembley Arena in London, on October 18, 2013.

Vocalist and guitarist Myles Kennedy of American rock group Alter Bridge performing live on stage at Wembley Arena in London, on October 18, 2013.

Guitarist Mark Tremonti of American rock group Alter Bridge performing live on stage at Wembley Arena in London, on October 18, 2013.

Bassist Brian Marshall (L) and guitarist Mark Tremonti of American rock group Alter Bridge performing live on stage at Wembley Arena in London, on October 18, 2013.