From what I gather from other forums is that a majority of bass players "memorize" all of thier bass lines. I have done a great deal of memorizing bass lines when I record on my digital 8 track. Many say they never write anything down on paper, I would say that 85% of what I do is from memory. At some point however it seems that you will hit a wall by using memory only. I read a poll that asked bass players if they memorize or physically write down bass lines and it was somethimg like 33 said memorize and 1 or 2 said they write. So basically I am curious on this forum do you memorize or actually write out pieces of work?