Clutch just wrapped up a tour with Corrosion of Conformity and, on some dates, Mastodon. So with such awesome bands with such awesome members literally waiting in the wings of your show, why wouldn't you bring some of 'em out to join in on the fun?
Below you can check out footage of Corrosion of Conformity's vocalist and guitarist Pepper Keenan playing "Spacegrass" with Clutch, as well as Mastodon's Bill Kelliher coming out for "Texan Book of the Dead."
[youtube]https://www.youtube.com/watch?v=D5AY6GXRNE4[/youtube]
[youtube]https://www.youtube.com/watch?v=TjLaAWQfgCs[/youtube]
[via The PRP]
