Just in: Taking the stage on this week’s American Idol results show on Wednesday at 9 will be pop sensations Ke$ha and Orianthi. Ke$ha will sing Blah Blah Blah, and Orianthi performs According to You.  On Tuesday, promises Fox, a new Idol stage will be revealed as the Top 12 singers take on The Rolling Stones. What songs do you think will work for this group? – Ann Oldenburg