They swept the Grammy's, Country Music Awards and wowed Steven Tyler during their performance of their new single, Just a Kiss, on American Idol.

So much so that he interrupted their backstage interviews to convince them that they had to cover an Aerosmith tune!

Of course, Lady Antebellum was flattered and agreed to the recording an laid down a version of 'What it Takes.'

Check it out below!  This is from the new Lady A webisode site.