Back in Black 

bend = levantar la cuerda 

                                 b 
------------------------3-0------------
----------------------------3-0--------
---------------------------------2--0--
--2----7-7-7----7-7-7------------------
--2----5-5-5----4-4-4------------------
--0------------------------------------



-----------------------------------
-------------------------------
-----------------------------------
-2----7-7-7---7-7-7------------------
-2----5-5-5---4-4-4----------------
-0--------------------------------