This is one amazing video. It is of guitarist Justin King playing both necks of a double-necked acoustic guitar simultaneously, using a combination of hammer-ons, pull-offs and strumming, as well as a couple of percussive knocks on wood.
“Knock On Wood (live)” (QuickTime, 7.1 MB)
that video link doesn’t work anymore 🙁
Looks like the site’s been rejigged. That’s a shame, it was one amazing video.
this site works now i cant link it but here it is
http://www.doolinguitars.com/videos/knockonwood.mov
http://www.doolinguitars.com/videos/knockonwood.mov