Was the Sydney show the first time they've done that?

 

Is there a recording?

^^nope, i'm pretty sure that Chris has been performing it on piano throughout the whole VLV tour. As for a recording, I don't think there's an official one out, but you could probably find a version of it in the multimedia section. Or you can convert it into an mp3 from a video.

if you check out the setlists on http://www.wikicoldplay.com, it'll tell you which shows he performed it at.

 

there's links from there to the discussion threads here. any youtube videos will be in the first post of the thread.