Home Events Railroad Earth Welcomes Johnny Grubb & Greensky Bluegrass In Mount Pocono Railroad Earth Welcomes Johnny Grubb & Greensky Bluegrass In Mount Pocono planetsixstring August 29, 2017 comments off Tweet on Twitter Share on Facebook Google+ Pinterest Watch Friday’s 30-minute Railroad Earth and Greensky Bluegrass encore featuring both bands as well as former RRE bassist Johnny Grubb.