Incredible band. They're a math rock duo, who later like, tried to become a 5 person band with a vocalist and all, but the new guys slowly fell out until it was back to just the two of them (iirc all their earlier albums asides their last one was just the two of em). My favorite two albums by them are Hold Your Horse Is and The Devil Isn't Red (in that order), so I recommend checking those albums out if you guys want to
note: I couldn't really find live/music videos from Hold Your Horse Is on YouTube, so this shall suffice.
Was surprised to see them listed on progarchives, though Math rock is rather close to prog rock. It's certainly technical, but a bit too chaotic for my tastes.