Jessica Sanchez and Joshua Ledet perform "I Knew You Were Waiting (For Me)" by Aretha Franklin and George Michael at the Top 8 performance show. Check out full performances with judges' commentary only at http://www.americanidol.com http://www.americanidol.com/ (Official Site) http://www.facebook.com/AmericanIdol ('Like' on Facebook) http://twitter.com/americanidol (Follow on Twitter) http://bit.ly/buyonitunes (Buy Now on iTunes)