Neil Fallon (Clutch), Jess Margera (CKY), Chris Weyh (CKY), Greta Hotmer (Altarviolet), Mike Bardzik (Duffy’s Cut, Thunder And Glory), and Chris Rattlesnake Brooks have joined forces for a cover of Traffic‘s “Feelin’ Alright.” Fans can purchase the track on Bandcamp with proceeds set to go towards the victims of the mass shooting at Robb Elementary…