I was at Electric Factory in Philly in 2017 when Mastodon and Opeth came together with each of their tours for one super show, which would've been really fucking cool of the venue didn't try to funnel 10k people through 2 security lines, which caused me to miss all of Russian Circles' set and half of Devin Townsend's.
Also it was the show where Brett Hinds lost it at the sound guy, but I was too far away to really notice during the set:
Also it was the show where Brett Hinds lost it at the sound guy, but I was too far away to really notice during the set: