JamGrass: Progressive Bluegrass Jams on a Band Called Phish is a country and progressive bluegrass tribute album to the rock band Phish performed by a number of veteran Nashville session musicians, and released on March 23, 2004.

The album's lead vocalist is Travis Stinson, who has performed on a number of occasions with The String Cheese Incident.

The album mainly features material from the latter part of Phish's career.

Scott Simontacchi: vocals, mandolin Travis Stinson: vocals Johnny Hiland: guitar Mark Fain: bass Bryan Landers: banjo Andy Leftwich: fiddle Bob Mater: drums Wright Pinson: percussion