in 70s outfit was shown as part of Guitar Hero World Tour rockumentary, and a Guitar Hero contest for the some members of audience was held. Tour dates Response The 2008 tour was far more successful than 2007's. Sales were up 38% in revenue per date and average attendance number up 35% compared to 2007. The average percentage of seats filled was 85.1% compared to season six's 68.4%; and 9 out of 53 shows were sold out. It is ranked as the 24th biggest grossing tour of 2008 on Billboard's Year-End Music Charts, earning $29,906,507 from a total of 493,296 tickets sold. Idols in Concert for the Holidays Due to the success of the 2008 tour, Fox and 19 Entertainment have decided to hold a tour called Idols in Concert for the Holidays. The former Idol contestants headlining the tour include David Hernandez (season 7), Diana DeGarmo (season 3), Kimberley Locke (season 2) and Chikezie (season 7). References External links Tour info from the American Idol official website Poptarts Tour Website American Idol concert tours 2008 concert tours