Carole King Week starts tonight on American Idol! This should be very interesting. Choosing the right song is key to Idol success, right up there with giving a perfect performance. Contestants can go wrong picking a song too closely identified with a previous Idol, too old or unfamiliar, too worn-out or just plain wrong for their voices. Could this be a rough week for country crooner Scott McCreery? Read on after the jump.

Entertainment Weekly has learned exclusively it will be with more singing: Idol contestants Casey Abrams, Lauren Alaina, James Durbin, Jacob Lusk, Scotty McCreery and Haley Reinhart will pair off and sing duets from the Carole King songbook on Wednesday night’s show.

Tonight's could be challenging for the contestants and should  separate the strong from weak!