Fast Archery Technique Rediscovered

People have been posting this video to facebook and it is amazing.  Danish painter, writer and archer, Lars Anderson has been breaking world records by using ancient archery techniques that have been lost for generations.  On his youtube site he comments:

Shooting with bow and crossbow. In the beginning I built repeater crossbows, but discovering man is faster than machines, so today I shoot only with bow.

I try to get back to a orginal archery before today's archery only focused on hitting a target. Historically, archery was to shoot series of arrows, fast, and hit targets in the Movement and even be in motion simultaneously, and also hit a target that shoot back.

His english isn't the best grammatically, but that doesn't detract from the awesomeness of his abilities.  I'd love to see more information about this technique, especially how he holds all the arrows in his hand and reloads without fumbling (though I imagine there's a TON of practice involved with that).