Pink Floyd bassist Roger Waters performed with G.E. Smith at Mr Smith’s 60th birthday bash at The Stephen Talkhouse in Amagasnett, New York on 22nd August 2012. The rest of the band were made up of Abe Fogle on drums and Jeff Kazee on piano. G.E. Smith has toured with Roger Waters on The Wall Tour since 2010 so I am sure it was a nice surprise for Roger to join in with the music.
You can watch a video of the performance below.