Michael Eliot Gordon is an American bass guitarist and vocalist most recognized as a founding member of the band Phish. In addition to bass, Gordon is an accomplished banjo player, and is proficient at piano and guitar. He is also a filmmaker and author. He has released six solo studio albums and three studio albums with acoustic guitar pioneer Leo Kottke.

Robert Walter is an American keyboard player specializing in soul jazz on the Hammond B3 organ and Fender Rhodes. He is best known as a founding member of The Greyboy Allstars. Walter, splits his time between The Greyboy Allstars, his own 20th Congress, and a robust film soundtrack session career in Los Angeles.