Keith Lemon was on Alan Carr: Chatty Man to promote, amongst other things, his new TV show Through The Keyhole (yes, the one that David Frost used to do). Having just returned from America, Lemon says he's taken on some of their peculiar accents and then launched into a dead-on impression of Sweet Brown.
Here's Keith Lemon's impression...
And here's the Autotune remix. Thank Jesus this isn't a thing anymore.