drop d tuning

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--------------------------------------------------------------------------------------------------- repeat 3 times
----------5--4---0-------5--4---0-------5---4---0---2---0------------------------------------------
------0--------------4---------------5---------------------5---4-----------------------------------



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-------------------I-----------------I-----------------I-----------------I X2
---0-0-0-0-0-0-0-0-I-5-5-5-5-7-7-7-7-I-0-0-0-0-0-0-0-0-I-5-5-5-5-7-7-7-9-I X2
---0-0-0-0-0-0-0-0-I-5-5-5-5-7-7-7-7-I-0-0-0-0-0-0-0-0-I-5-5-5-5-7-7-7-9-I
---0-0-0-0-0-0-0-0-I-5-5-5-5-7-7-7-7-I-0-0-0-0-0-0-0-0-I-5-5-5-5-7-7-7-9-I

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---9-9-9-9-9-9-9-9-I-7-7-7-7-7-7-7-7-I-----------------I-----------------I
---9-9-9-9-9-9-9-9-I-7-7-7-7-7-7-7-7-I-----------------I-----------------I
---9-9-9-9-9-9-9-9-I-7-7-7-7-7-7-7-7-I-----------------I-----------------I