Hi

As the title says, i need a little help... I heard this song a few week ago, i dont know any of the lyric, but its the song it self is a bit special...

Its a female realativly young singer.. (20-30 years old)
The song has a bit of country sound to it, but not alot. I belive its a pop-song.
I think its a cover version of an earlyer song...

I saw her on Dave Letterman show (migth be an older episode)
She walks in on the stage with a guitar. On the floor there is a switch to a "loopbox" that's connected to her mic.
She then sing a small bit, and the loopbox... well, loops it . Then she tabs the guitar, and the box loops it... She claps, and the box loops it... She continuous this until all the sounds make a beat... And then she sings and plays her guitar to that beat...

Hope you can help
-DNN