tuning= C-G-C-F-A-D ... = let ring D------------------------------------------ A----------------------------------10-10-10- F---2--------2-4-------4-7-7-7-7-7-10-10-10--- C---0--------0-2-------2-5-5-5-5-5\-8--8--8-- G---0--------0-2-------2-5-5-5-5-5\-8--8--8-- C---0--------0-2-------2-5-5-5-5-5\-8--8--8-- ......... ....... D-------------------------------------------- A-----3-------------------------------------- F-----2-------------------------------------- C-----0--------0-2-------2-5-5-5-5-5\8--8-8-- G---0-0--------0-2-------2-5-5-5-5-5\8--8-8-- C---0-0--------0-2-------2-5-5-5-5-5\8--8-8-- ......... .......