tuning: F=F# (7*5) (3*6)(7*3)(5*5)3*3*1**7* (7*5)7*7*6*7*5* (7*6) 7*7*7*7*1**7*5* (3*3)7*7*7*6*7*5* (7*1) 7*7*7*1**7*5* (7*5)7*7*6*7*5* (7*6) 7*7*7*7*1**7*5* (5*5)6*7*6*5* (7*5) 7*7*1**7*6*5*3* (5*3) 6*7*6*5* (7*1) 7*7*1**7*6*5*3* (5*5)6*7*6*5* (7*5) 7*7*1**7*6*5*3*…..
