Here's the best chance you may get.
The vocal coach for many former American Idol contestants, Debra Byrd, is offering a DVD called Vocal Help NOW! that purports to "help maximize ... vocal and audition performances."
Featured on the DVD are Kelly Clarkson, Anthony Fedorov and Kimberly Caldwell. With each purchase of the $19.99 DVD, consumers are entitled to a free bottle of Byrd's Vocal-eZe Professional Throat Spray.
We can't vouch for how effective this product is, but any edge you can get if you wish to try out for American Idol next season and be the next Chris Sligh, right?