I knew I had heard this track before. I went digging around. I have a rare Zach Hill tracks compilation. Unfortunately, it is saved as "Zach Hill and Carson McWhirter - Untitled" -_-
Joey is right. I simply used that photo because it has Carson & Zach playing together. It's from their improvised performance in South Korea not long before Death Grips started. I have no idea where the track comes from, I've had it on my hard drive for a long time.
I don't remember thruthewalls although it's possible I somehow stumbled upon it back in the days. I used to visit an obscure Hella forum and have been an avid Soulseek user for over a decade.
It's on RU-vid, just search for "Mars Volta Sacramento". I thought about using my channel to spread the word about it for a moment, then decided against it because I dislike pointless re-uploads.