"Difference between old-fashioned and Modern guitars" http://www.rdiaz.org/rd-art%207.html
Zero fret a new optional feature in flamenco
https://youtu.be/JcyyYyuExzg?t=14s
Flaw Detection Guidelines http://youtu.be/5Pw4mNtVHeU?t=14s
Conditioned by habit http://youtu.be/q_MkQjgbjUM?t=14s
Luthiers Can't Define Play-ability http://youtu.be/z3Ps3U1jT5I?t=14s
^Ex.1/ 00:14 solo 1
Ex.2/ 02:31 solo 2
Ex.3/ 07:54 solo 3
Ex.4/ 04:38 topic
.........
Releasing bad-weight from the left hand /Horizontal balance
https://youtu.be/oC3muoU9GOE?t=14s
