Hi, this is the bass groove of Night Train by James Brown. It's a simple blues 
riff made in H#(Ab), enjoy!

G ------------------------|---6-----4--3----------|---8-----6--5----------|
D ---6-----4--3-----------|------6--------6--3----|------8--------8--5----|
A ------6--------6--3-----|-4-------------------4-|-6-------------------4-|
E -4-------------------4--|-----------------------|-----------------------|