 A mash-up of "Miss Independent" and Led Zeppelin's "Whole Lotta Love" AC/DC's "Back in Black" then played for a while over the sound system; when the curtain opened the set had been stripped to a techno-modern look, while Clarkson had undergone the minimal costume change of adding a black sleeveless vest.The single encores segment began with a respectfully delivered "Sober" followed by the informal "Chivas" and then her biggest hit, "Since U Been Gone", the last of which typically featured sing-alongs or dancing fans pulled up on stage.In all she typically performed for 75 to 80 minutes.