Some Rebol Programmers are also guitarists,
so have a squiz at this, eh Nick!
http://www.gizmag.com/tabber-led-sleeve-guitar-teaching-systems/22063/
or, http://www.musicalight.com/
Thanks for your Rebol work, its great!
Nick — 12-Apr-2012/8:08:18-7:00
I have a student with Down Syndrome who's been using the Optek LED guitar for years. It's nice to see other options!