Discovered the original after coming through Cube 3.
The base mixup taught here is the superior
one that I've since used as a basis.
Many different ideas are intermixed here, but the real gold
nugget is the prediction routine featured in the trailer that ends with a triple simultaneous solve,
including in a bag.
I still cannot perform it at the full level that Takamiz does, but I
re-scripted a slightly simplified version that allows for the big payoffs (still required
weeks-months of practice to get fast enough at solving a Rubik's cube in a live performance).