Adam Lambert performs at American Idols Live 2009 at Staples Center. Lambert reprised several of his high points from the “American Idol” TV show and added a David Bowie medley. Review: Ann Powers: The Idols wave their hands at Staples (Irfan Khan / Los Angeles Times)
Season champion Kris Allen expressed rock as plain, unadorned fun. (Irfan Khan / Los Angeles Times)
Danny Gokey walked the line between gruff soul and country crooning. (Irfan Khan / Los Angeles Times)
Allison Iraheta belted out songs by Pink, Janis Joplin and Heart. (Irfan Khan / Los Angeles Times)
Scott MacIntyre performs at the piano during American Idols Live 2009 at Staples Center. (Irfan Khan / Los Angeles Times)
Kris Allen, left, Adam Lambert and Lil Rounds team up. (Irfan Khan / Los Angeles Times)
The singers were cheered on by enthusiastic fans at Staples Center. (Irfan Khan / Los Angeles Times)
