It's a neat video, but it seems out of sequence from the perspective of the order things harp players learn things. By the time I can figure out the type of D chord I've already grabbed a bunch of harps and figured out the key.
I imagine it would be really useful though if you were sheet reading primarily.
nacoran - You are correct. I myself am taking (private) lessons and with me seeking out jazz, my teacher gives me standard music theory. This video would fall into place with what I'd be learning.
