I recently bought a Digitone, so I've been watching a lot of tutorials for it. This one is one of the most interesting I've seen.
It's also one of the first videos I've watched all the way through at 1x speed without skipping anything, and it's almost one hour and a half. I've been incapable of watching any video at a speed lower than 1.5x for the last 4 years, so I think that says a lot about the quality of this video.