I’ve searched high and low for that Kahootz duet, but can’t find it. BUT you can listen to Bruce on piano in the Trios concert at the Beacon Theater, NYC, 1994-03-26:
Given their past interactions, I guess it’s no surprise that Bruce played on Rocket House – even if his doing so was very much an after-thought as explained in this snippet from Hornsby’s newsletter:
Chris Whitley, in Bruce’s mind one of the greatest and most unsung artists of the last ten years, was calling Bruce to tell him how much he liked the live Noisemakers album when conversation turned to Chris’ new record Rocket House (Bruce loves to talk about himself and receive accolades, plaudits and laudatory remarks, but decided this time to be curious about his friend’s recent activities). Chris said, “I wish you could play on this, but I just finished it.” Bruce said, “That’s OK, Chris, I could still play on it.” Chris then said, “I’ll send you the finished record and you can just overdub onto it, or play some intros or outros.” So Bruce wound up on the song “Radar”, making a cameo appearance playing a solo electric piano intro for about twenty seconds.
You can listen to that 20-second intro – or the whole thing – here.