[quote name='Alun' post='671602' date='Dec 1 2009, 09:43 PM']String crossing is one of the trickiest things to do on bass IMO. I would suggest the folowing exercise:
1, play 2 notes one each string ( doesn't matter what notes really, this is aimed purely at the picking side of things), making sure you strictly alternate. First do it with index then middle, and then reverse it so you'e playing middle then index. Slowly go from the E string to a, then, D then G, and back down again. Don't worry about speed, just aim for accuracy and keep the fingers alternating.
Once that starts to feel comfortable...
2, same as above but with 3 notes per string but still alternating so the E string will be index, middle, index , the A string will be middle, index, middle, etc. Again, reverse it as well so you start with the "other" finger
The reason I suggest making sure you can start with either finger is that most players will feel more comfortable starting with one or the other ( I certainly do) and may stumble if they have to start a pattern with the other one ( again, it definitely happens to me which is why I started doing this exercise)
Finally, try one note per string. I say to do this last as I find it the trickiest of the lot.
Hope that helps!
Cheers
Alun
PS You can also do all the above skipping strings once you're happy with the string crossing [/quote]
That certainly will help, Many thanks.