fzrsew49 wrote:i only need the bass line, nothing else. many thanks if you can help.
If you mean you need the bass line removed then, yes, Dave's tracks are just the ticket and I agree with all the above.
If you mean you need the bass line on its own so that you can study it, that's more difficult but there are ways of bringing it out so you can hear what's going on more clearly. In any stereo track the bass is often offset so isolating the 'side' where the bass is clearer is a good start. You can then adjust your bass and treble controls to clarify it further. I actually discovered that rare occurrence, a John Rostill 'mistake', by doing just that!
Another way to study the bass line, if you have the technology, is to play the track at double speed. OK, it becomes the instrumental equivalent of Pinky and Perky or the Chipmunks, but it's surprising just how prominent the bass part will seem when you listen this way.
A further trick with computer technology is to isolate a section where there's something interesting going on and 'loop' it so it plays over and over again.
Playing along with the records is also a good way to practise. OK there's already bass on them but you'll still hear what you're doing and it'll help you play in sync with the band, which is just as important as playing appropriate notes!
Hope this helps - Iain