Surprise Guest on American Idol Tonight... Can You Guess Who It Is?!

The list of performers of tonight's (Wednesday) American Idol finale has been leaked, and it includes some very big names. We at have been desperate to let all the fans know that Tom will be performing tonight, but went with the shows protocol.

However, now that it has been leaked we are thrilled to announce Tom as one of the special guests on tonight's live final!

Gladys Knight, Lil’ Jon, Tim McGraw and Carrie Underwood are also on the schedule; along with Lady Gaga, Bono and The Edge, and Jack Black, who have been rumored all week.

The two-hour season finale of American Idol starts tonight at 8 p.m. EST on FOX.