The song Proof is performed by Coldplay in the album named Speed of Sound in the year 2005 .
So I waited for you
What wouldn't I do?
Am I better of to?
Oh, and I'm honest too
If I ever want proof
Oh, then I'll find it in you
Oh yeah, I honestly do
In you I've got proof
Light, dark, bright spark
Light, dark, light
Oh yeah, I waited all night
Oh, who wouldn't sigh?
Yeah, I waited for you
What would I do?
And if I ever want proof
Then I'll find it in you, I do
Yeah, I honestly do
In you I've got proof
Bright spark light and dark
Bright spark try