Phish: 1994 Bluegrass Sessions
The Rev. Jeff Mosier (Blueground Undergrass) was contracted by Phish in the Fall of 1994, to help them learn Bluegrass. They flew him to Michigan and Mike Gordon picked him up in a limo, and they had their first lesson on 11/14/1994, same night as Grand Rapids.
Directors: Mike Gordon
IMDB: tt0485143