This is the way I play the bass for this song, which I feel fits best to
the tune. The whole song is played in quarter measures, except the whistle 
(which is in eighths) and when noted. 
Please rate if you liked it! Have fun!




Intro no bass                   
  8 measures rest


Verse 1 second time: bass starts
G|-------------------------------------------------------------------|
D|*-----------------------------------------------------------------*|
A|*---------------------------------7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-*|
E|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7----------------------------------|

                                                     _____________              
Chorus                                               |1.
G|--------------------------------------------------|------------| 
D|*-------------------------------------------------|-----------*|
A|*-------------------------------------------------|-----------*|
E|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-0-0-0-0-0-0-0-0-|-0-0-0-0-0--|
  ____________________________
  |2.
G|-------4-2-----------------|
D|-----------4-2-0-----------|
A|-2-4-5---------------------| 
E|-------------------0-0-0-0-|


Verse 2 no bass
  8 measures rest

Bass starts
G|-----------------------------------------------------------------|
D|-----------------------------------------------------------------|
A|---------------------------------7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-|
E|-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7---------------------------------|

                                                     _____________              
Chorus                                               |1.
G|--------------------------------------------------|------------| 
D|*-------------------------------------------------|-----------*|
A|*-------------------------------------------------|-----------*|
E|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-0-0-0-0-0-0-0-0-|-0-0-0-0-0--|
  ____________________________
  |2.
G|-------4-2-----------------|
D|-----------4-2-0-----------|
A|-2-4-5---------------------| 
E|-------------------0-0-0-0-|


Verse 3 first time: full measures//second time: quarters
G|----------------------------------------------------------|
D|----------------------------------------------------------|
A|----------------------------------------------------------|
E|--7~~~~--7~~~~--7~~~~--7~~~~--0~~~~--0~~~~--0~~~~--0~~~~--|

G|-----------------------------------------------------------------|
D|-----------------------------------------------------------------|
A|-----------------------------------------------------------------|
E|-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-0-|


1 measure rest
 
                                                     _____________              
Chorus                                               |1.
G|--------------------------------------------------|------------| 
D|*-------------------------------------------------|-----------*|
A|*-------------------------------------------------|-----------*|
E|--7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-7-0-0-0-0-0-0-0-0-|-0-0-0-0-0--|
  ____________________________
  |2.
G|-------4-2-----------------|
D|-----------4-2-0-----------|
A|-2-4-5---------------------| 
E|-------------------0-0-0-0-|