Death Grips is a rap group popular among metalheads due to drummer Zach Hill being in the band (he of Hella, Team Sleep and solo fame) as well as rapper McRide.
The group, who I thought were broken up (?), actually announced a new album today called Bottomless Pit and on one, weird track, they enlist king weirdo, Les Claypool, to offer some help. It definitely sounds like there are some Claypool signature bass lines on this track, but I can't make out if he actually contributes vocals:
[youtube]https://youtu.be/UWkJghqMSpo[/youtube]
I'm into it. Pick up a pre-order for Bottomless Pit here. The album is out July 29th.