Here is another classic bass line from jack bruce.
Tabbed By: Nicholas C. Bass for Spherical; www.tekcities.com/sphericalband

Intro/Verse Lick:

 Over the A Chord
G|----------------||
D|-7-------7------||
A|---9-7-9--------||
E|----------------||

 Over the D Chord
G|-7-------7------||
D|---9-7-9--------||
A|----------------||
E|----------------||

  Over the E Chord
G|-9---------7----||
D|---11-9-11------||
A|----------------||
E|----------------||

Chorus:

G|----------------|----------------|----------------|----------------||
D|----------------|----------------|----------------|----------------||
A|-7--------------|------3-4-5-5---|-5-5-6-7-7-7----|----------------||
E|---0-2-3-4--5-5-|x-5-5------5--5-|----------7-7\5-|-5-x-5 5-3-2-1-5||

Okay that wraps up another quality bass tab. With questions or
comments please feel free to contact me at 
GuitarMan2737@aim.com- The Bass Dude