Plus: 'Project Runway' All-Stars, 'Brothers & Sisters,' Lady Gaga does 'Idol'
Lady Gaga to mentor 'American Idol' finalists
The top 4 finalists on "American Idol" are about to be dished advice from one of the biggest global pop superstars on the planet next week.
Lady Gaga's promo train keeps a'chuggin' and makes a stop on the FOX show in time to promote her forthcoming release of "Born This Way."
And the theme? The songs of Jerry Leiber and Mike Stoller, who were rock 'n' roll hitmakers in post-WWII America. How... appropriate? Look for picks like "Jailhouse Rock" and "Yakety Yak" on Wednesday and
maybe even a cameo from the "Judas" singer on Thursday.