Paul Kelly - "White Christmas" KCRW radio session from 1989. Not the best sound quality, but I wanted to post it anyway. At first I was only going to post this one because it's not something he's issued officially, but it's only 45 seconds long so I decided to include "Gravy" as well.
Paul Kelly - "How To Make Gravy" Originally the title track to an EP, also released on the US version of Words and Music. Not so much a rarity, but a great song.