Who Knows

This song basically consists of two main patterns all based around the same idea.. 
 
first pattern: 
|------------------------------| 
|.-------------------------7~-.| 
|--------------------------7~--| 
|--9-7-9-7-9-7-------------7~--| 
|.-------------9-8-7~--7-7----.| 
|------------------------------| 
 
second pattern: 
|--------------------------------| 
|.---------------------------7~-.| 
|----------------------------7~--| 
|--9-7-9-7-9-7-9-7-9-7-9-7-9-7~--| 
|.------------------------------.| 
|--------------------------------| 
 
variation on second pattern: 
 
|--------------------------------| 
|--9b10--9--7----------------7~--| 
|--9b10--9--7----------------7~--| 
|--------------9-7-9-7-9-7-9-7~--| 
|--------------------------------| 
|--------------------------------| 
 
third pattern: 
|---------------------| 
|.-------------------.| 
|---------------------| 
|--9-7----------------| 
|.------9-8--7-------.| 
|--------------10--7--| 
 
enjoy