Band: Cream
Song: Crossroads
Album: Strange Brew

Play 12 Bar Blues Style Pattern with this riff. Jack Bruce often keeps doing improvisations on this riff. I recommend you use a light slapping technique to get the exact sound.

Riff A
G|----7--5-7-5--|
D|------------5-|
A|-5------------|
E|--------------|

Riff B
G|-----12--10-12-10----|
D|------------------10-|
A|-10------------------|
E|---------------------|

Riff C
G|-----14--12-14-12----|    G|---------------| (He keeps changing
D|------------------12-| or D|----7--5-7-5---| between each, but
A|-12------------------|    A|-------------5-| it doesn’t matter
E|---------------------|    E|-5-------------| which you play).

Play in this order:

Riff A x4
Riff B x2
Riff A x2
Riff C x1
Riff B x1
Riff A x2

Repeat through the song

During the solo, the Jack improvises in D (Minor pentatonic I think, but he keeps playing bits of the riff to keep the rhythm going.