This is a video posted on YouTube of Michael McKean, Christopher Guest and Harry Shearer taped at House of Blues on Sunset Boulevard, LA. I believe this was the pre-tour press event that preceded their Unwigged and Unplugged Tour, which happened earlier this year.
Not perfect video, but fairly decent, quite enjoyable and sound's good (tip: click the HQ option for High Quality playback).
The clip begins with a medley of songs from Spinal Tap and the trio's other films, then transitions to an interview onstage between the trio and Kurt Loder (famed MTV news guy).
See www.unwigged.com for more info on the uber-talented actor-musicians and their U&U tour.
August 4, 2009
VIDEO VAULT: Spinal Tap trio plays UNWIGGED AND UNPLUGGED song medley LIVE + Interview (HOB on Sunset in LA)