A few years ago I stumbled across a video on YouTube of Neil performing DDIO acoustically - but in a lower key. He even made a comment at the start of the song that he had brought the key down to suit his voice. I'm guessing the clip was mid-late 90s; maybe just prior to the Try Whistling This era.
Clearly he subsequently decided the change in key was unnecessary or even detrimental, because every other performance I've seen has been in the original key.
Can anyone corroborate this / point me to where I can find the video? I am worried I may have dreamt or imagined it.