To be the best, you've got to sing the best.
With that in mind, the top five contestants on American Idol sang a pair of songs each last night: one from the year they were born, and one by an all-time iconic diva.
There was Whitney Houston and Dolly Parton, Beyonce and Celine Dion. Who put on the best performance of the evening?
Amber Holcomb sure made Dolly Parton proud with this cover of "What Are You Doing the Rest of Your Life?" Check it out now.
Then, watch the other quartet of diva renditions and vote on the night's top song:
Which classic cover was best?