DROP D TUNING
D, A, D, G, B, E
--------------|-----------------------|---------------------------------------
--------------|-----------------------|---------------------------------------
--------4-----|--------4--------------|--------4--------4---------------------
---0---------0|---2---------2------0-0|---0--------0------0-0-----------------
-2---2-----2--|-0---0-----0-----------|-2---2----2---2------------------------
--------------|-----------------------|---------------------------------------
----------------------|-------------------------------------------------------
----------------------|-------------------------------------------------------
--------4--------4----|-------------------------------------------------------
---2--------2------0-0|-4444444444444444-2222222222222222---------------------
-0---0----0---0-------|-2222222222222222-0000000000000000---------------------
----------------------|-------------------------------------------------------
----------------------------|-------------------------------------|-----------
----------------------------|-------------------------------------|-----------
--------777777--------666666|-------------------------------------|-----------
-444444-xxxxxx-444444-xxxxxx|-444444444444777777777777222222222222|-4-----0---
-222222-555555-222222-444444|-222222222222555555555555000000000000|-2-----2---
----------------------------|-------------------------------------|-----------