Home Features La Bella Strings, MTD , Gallien-Krueger, and GRUV GEAR Present a Bass Clinic with Robert Bubby Lewis & Justin Raines La Bella Strings, MTD , Gallien-Krueger, and GRUV GEAR Present a Bass Clinic with Robert Bubby Lewis & Justin Raines planetsixstring July 18, 2017 comments off Tweet on Twitter Share on Facebook Google+ Pinterest Robert Bobby Lewis and Justin Raines are doing a bass clinic for La Bella, MTD, Gruv Gear, and GK. bass bass player magazine