As is the tradition of the Jammys, last night’s show offered up many interesting collaborations. RatDog bassist Rob Wasserman and DJ Logic kicked off the night. Next was Rusted Root, DJ Logic and guitarist Melvin Sparks, who played ‘Send Me on My Way’ and ‘Ecstasy,’ with host John Popper adding harmonica. John Scofield was joined by saxophonist Skerik, drummer Stanton Moore and bassist Andy Hess. Pedal Steel guitarist Robert Randolph sat in with the Blind Boys of Alabama for ‘Amazing Grace.’ Unannounced guest John Mayer collaborated with Randolph and Derek Trucks. Particle and Fred Schneider and Kate Pierson of the B-52’s played ‘Planet Claire,’ ‘Private Idaho’ and ‘Love Shack.’ Original Blue Oyster Cult members Eric Bloom (vocals), Buck Dharma (guitar) and Allen Lanier (guitar, keyboards) took the stage as moe. was finishing ‘Rebubula’ and segued into ‘Don’t Fear the Reaper.’ Reid Genauer, Jessica Lurie and Hope Clayburn joined house band The Tom Tom Club for ‘Take Me to the River.’ Bassist Stefan Lessard (Dave Matthews Band) played ‘Beautifully Broken’ with Gov’t Mule, before the Allman Brothers Band took the stage and RatDog’s set was capped by the monster dual stage jam, which closed out the show [see previous story for details].