Harry Connick Jr. mentors for tonight's Frank Sinatra theme night on "American Idol." The top five singers perform in a one-hour episode that begins at 8 p.m. on Fox.
In an interview, ousted finalist Siobhan Magnus said contestants will not be allowed to play guitars tonight.
Will Casey James suffer after losing his security blanket? Will Crystal Bowersox solidify her position as a front-runner?
Follow our "American Idol" blog for live updates throughout tonight's show.