You can find lots of videos and audios of him on YouTube, but here's one that my good friend Mike Engber brought to my attention. It's a feminist version of the Lady who Swallowed a Fly, and it shows Pete's technique and instinctive ability to find the good songs (lyrics by Meredith Tax).
http://www.youtube.com/watch?v=AR2_c4tvwbM
R.I.P.