Famed guitarist Steve Vai will join R&B singer Mary J. Blige and her all-star band — BLINK-182 drummer Travis Barker, "American Idol" judge and bassist Randy Jackson, Michael Jackson's guitarist Orianthi and Ron Fair

— to perform the LED ZEPPELIN classic "Stairway to Heaven" this Wednesday night (April 21) on "American Idol"'s annual charity event, "Idol Gives Back!" Check your local listings on FOX!
http://tinyurl.com/vaionidol